{"id":19823,"date":"2022-06-30T06:49:03","date_gmt":"2022-06-30T06:49:03","guid":{"rendered":"http:\/\/dgbellvietnam.com\/low-temperature-environment-test-of-electronic-instruments-part-2\/"},"modified":"2024-10-24T20:49:55","modified_gmt":"2024-10-24T13:49:55","slug":"low-temperature-environment-test-of-electronic-instruments-part-2","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/low-temperature-environment-test-of-electronic-instruments-part-2\/","title":{"rendered":"Th\u1eed nghi\u1ec7m m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 th\u1ea5p c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed \u2013 Ph\u1ea7n 2"},"content":{"rendered":"
\n

3.3 Y\u00eau c\u1ea7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m<\/span><\/span><\/strong><\/span><\/h1>\n

(1) Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m nhi\u1ec7t \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 gi\u1eefa m\u1ed7i b\u01b0\u1edbc nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 20\u2103\/h. Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, th\u1eed nghi\u1ec7m c\u00f3 li\u00ean quan ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n sau khi d\u1ee5ng c\u1ee5 th\u1eed nghi\u1ec7m \u0111\u1ea1t \u0111\u1ebfn tr\u1ea1ng th\u00e1i \u1ed5n \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 trong ph\u1ea1m vi c\u00f3 th\u1ec3.<\/span><\/span><\/p>\n

(2) Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m l\u01b0u tr\u1eef nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 th\u1ea5p c\u1ee7a m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb, ngu\u1ed3n \u0111i\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c ng\u1eaft k\u1ebft n\u1ed1i. Ngu\u1ed3n \u0111i\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1eef trong bu\u1ed3ng th\u1eed nghi\u1ec7m \u00edt nh\u1ea5t 4 gi\u1edd.<\/span><\/span><\/p>\n

(3) Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m nhi\u1ec7t \u0111\u1ed9 c\u00f3 li\u00ean quan, nhi\u1ec7t \u0111\u1ed9 trong bu\u1ed3ng th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c duy tr\u00ec \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 \u1ed5n \u0111\u1ecbnh nh\u1ea5t c\u00f3 th\u1ec3. V\u00e0 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 ph\u1ea3i nh\u1ecf h\u01a1n \u00b1 2 \u2103. \u0110\u1ed3ng th\u1eddi, th\u1ec3 t\u00edch c\u1ee7a <\/span><\/span>bu\u1ed3ng th\u1eed nghi\u1ec7m<\/span><\/span><\/a> ph\u1ea3i \u00edt nh\u1ea5t g\u1ea5p 3 l\u1ea7n th\u1ec3 t\u00edch c\u1ee7a d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m. Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m n\u00e0y, ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p c\u00f3 li\u00ean quan \u0111\u1ec3 tr\u00e1nh \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 \u1ea9m \u0111\u1ebfn th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

(4) Trong qu\u00e1 tr\u00ecnh th\u1eed nhi\u1ec7t \u0111\u1ed9 c\u1ee7a c\u00e1c d\u1ee5ng c\u1ee5 li\u00ean quan, c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n v\u00f2ng tu\u1ea7n ho\u00e0n th\u1eed nhi\u1ec7t \u0111\u1ed9.<\/span><\/span><\/p>\n

(5) Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m nhi\u1ec7t \u0111\u1ed9 trong \u0111i\u1ec1u ki\u1ec7n tham chi\u1ebfu: c\u1ea7n ti\u1ebfn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 20\u2103\u00b1 2\u2103. Sau khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m \u1ed5n \u0111\u1ecbnh, h\u00e3y b\u1eadt ngu\u1ed3n \u0111i\u1ec7n v\u00e0 l\u00e0m n\u00f3ng tr\u01b0\u1edbc theo th\u1eddi gian l\u00e0m n\u00f3ng tr\u01b0\u1edbc do d\u1ee5ng c\u1ee5 ch\u1ec9 \u0111\u1ecbnh, sau \u0111\u00f3 ki\u1ec3m tra c\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan c\u1ee7a d\u1ee5ng c\u1ee5 v\u00e0 c\u1eaft ngu\u1ed3n \u0111i\u1ec7n sau khi th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

(6) Nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n d\u01b0\u1edbi ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn t\u00f9y \u00fd trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 d\u1ecbch v\u1ee5 \u0111\u1ecbnh m\u1ee9c cho th\u1eed nghi\u1ec7m. Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m ph\u1ea3i \u1edf tr\u1ea1ng th\u00e1i c\u00f3 \u0111i\u1ec7n v\u00e0 th\u1eed nghi\u1ec7m<\/span><\/span><\/p>\n

Khi nhi\u1ec7t \u0111\u1ed9 trong h\u1ed9p th\u1eed nghi\u1ec7m gi\u1ea3m xu\u1ed1ng 10\u2103, c\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m s\u1ebd \u0111\u01b0\u1ee3c ki\u1ec3m tra sau khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m \u1ed5n \u0111\u1ecbnh v\u00e0 s\u1ebd ng\u1eaft ngu\u1ed3n \u0111i\u1ec7n sau khi th\u1eed nghi\u1ec7m ho\u00e0n t\u1ea5t.<\/span><\/span><\/p>\n

(7) Ti\u1ebfn h\u00e0nh c\u00e1c th\u1eed nghi\u1ec7m c\u00f3 li\u00ean quan \u1edf nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n d\u01b0\u1edbi \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 d\u1ecbch v\u1ee5 \u0111\u1ecbnh m\u1ee9c: ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m s\u1ebd b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i, nhi\u1ec7t \u0111\u1ed9 trong bu\u1ed3ng th\u1eed nghi\u1ec7m s\u1ebd \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ebfn 0 \u2103, sau khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m \u1ed5n \u0111\u1ecbnh, ngu\u1ed3n \u0111i\u1ec7n s\u1ebd \u0111\u01b0\u1ee3c b\u1eadt, sau \u0111\u00f3 ti\u1ebfn h\u00e0nh l\u00e0m n\u00f3ng tr\u01b0\u1edbc theo th\u1eddi gian l\u00e0m n\u00f3ng tr\u01b0\u1edbc do thi\u1ebft b\u1ecb ch\u1ec9 \u0111\u1ecbnh. Sau khi l\u00e0m n\u00f3ng tr\u01b0\u1edbc ho\u00e0n t\u1ea5t, c\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan s\u1ebd \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u00e0 ngu\u1ed3n \u0111i\u1ec7n s\u1ebd b\u1ecb c\u1eaft sau khi th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

(8) Th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n d\u01b0\u1edbi \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng gi\u1edbi h\u1ea1n: trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c b\u1eadt ngu\u1ed3n. \u0110i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 trong bu\u1ed3ng th\u1eed nghi\u1ec7m \u0111\u1ebfn -10 \u2103, th\u1eed nghi\u1ec7m c\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan sau khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m \u1ed5n \u0111\u1ecbnh v\u00e0 c\u1eaft ngu\u1ed3n sau khi th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

(9) Th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n d\u01b0\u1edbi \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 l\u01b0u tr\u1eef: ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c ng\u1eaft k\u1ebft n\u1ed1i. \u0110i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 trong bu\u1ed3ng th\u1eed nghi\u1ec7m \u0111\u1ebfn -40 \u2103 v\u00e0 l\u01b0u tr\u1eef trong h\u01a1n 4 gi\u1edd.<\/span><\/span><\/p>\n

(10) Ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 trong \u0111i\u1ec1u ki\u1ec7n tham chi\u1ebfu: nh\u00e2n vi\u00ean ki\u1ec3m tra c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 trong bu\u1ed3ng ki\u1ec3m tra \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 tham chi\u1ebfu. Sau khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c ki\u1ec3m tra \u1ed5n \u0111\u1ecbnh, b\u1eadt ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a d\u1ee5ng c\u1ee5, sau \u0111\u00f3 l\u00e0m n\u00f3ng tr\u01b0\u1edbc theo th\u1eddi gian l\u00e0m n\u00f3ng tr\u01b0\u1edbc \u0111\u00e3 ch\u1ec9 \u0111\u1ecbnh c\u1ee7a d\u1ee5ng c\u1ee5. Sau khi l\u00e0m n\u00f3ng tr\u01b0\u1edbc, ki\u1ec3m tra c\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan c\u1ee7a d\u1ee5ng c\u1ee5. Trong th\u1eddi gian n\u00e0y, \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1ee5ng c\u1ee5 kh\u00f4ng b\u1ecb ng\u01b0ng t\u1ee5.<\/span><\/span><\/p>\n

(11) Nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn t\u00f9y \u00fd trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 d\u1ecbch v\u1ee5 \u0111\u1ecbnh m\u1ee9c \u0111\u1ec3 th\u1eed nghi\u1ec7m: trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m s\u1ebd \u0111\u01b0\u1ee3c b\u1eadt ngu\u1ed3n v\u00e0 nhi\u1ec7t \u0111\u1ed9 trong bu\u1ed3ng th\u1eed nghi\u1ec7m s\u1ebd \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ebfn 30 \u2103. Sau khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m \u1ed5n \u0111\u1ecbnh, c\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan s\u1ebd \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m v\u00e0 ngu\u1ed3n \u0111i\u1ec7n s\u1ebd b\u1ecb c\u1eaft sau khi th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

(12) Th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 d\u1ecbch v\u1ee5 \u0111\u1ecbnh m\u1ee9c: trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, d\u1ee5ng c\u1ee5 th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c b\u1eadt ngu\u1ed3n v\u00e0 nhi\u1ec7t \u0111\u1ed9 trong bu\u1ed3ng th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ebfn 40 \u2103. Sau khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5 th\u1eed nghi\u1ec7m \u1ed5n \u0111\u1ecbnh, ph\u1ea3i ki\u1ec3m tra c\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan v\u00e0 ph\u1ea3i c\u1eaft ngu\u1ed3n sau khi th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

(13) Th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng gi\u1edbi h\u1ea1n. Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, d\u1ee5ng c\u1ee5 th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c b\u1eadt ngu\u1ed3n v\u00e0 nhi\u1ec7t \u0111\u1ed9 trong bu\u1ed3ng th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ebfn 50 \u2103. Sau khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5 th\u1eed nghi\u1ec7m \u1ed5n \u0111\u1ecbnh, ph\u1ea3i ki\u1ec3m tra c\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan v\u00e0 sau khi th\u1eed nghi\u1ec7m ph\u1ea3i ng\u1eaft ngu\u1ed3n \u0111i\u1ec7n.<\/span><\/span><\/p>\n

(14) Th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 l\u01b0u tr\u1eef: ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c ng\u1eaft k\u1ebft n\u1ed1i. \u0110i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 trong bu\u1ed3ng th\u1eed nghi\u1ec7m \u0111\u1ebfn 60 \u2103 v\u00e0 l\u01b0u tr\u1eef trong h\u01a1n 4 gi\u1edd.<\/span><\/span><\/p>\n

(15) Ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m \u1edf nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 d\u1ecbch v\u1ee5 \u0111\u1ecbnh m\u1ee9c: trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m ph\u1ea3i \u1edf tr\u1ea1ng th\u00e1i t\u1eaft ngu\u1ed3n, \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 c\u1ee7a bu\u1ed3ng th\u1eed nghi\u1ec7m \u0111\u1ebfn 40 \u2103, sau khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m \u1ed5n \u0111\u1ecbnh, b\u1eadt ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a n\u00f3, sau \u0111\u00f3 th\u1eed nghi\u1ec7m c\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan c\u1ee7a n\u00f3. Ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao trong \u00edt nh\u1ea5t 16 gi\u1edd, th\u1eed nghi\u1ec7m c\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan tr\u01b0\u1edbc khi k\u1ebft th\u00fac v\u00e0 c\u1eaft ngu\u1ed3n sau khi th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

3.4 K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m<\/span><\/span><\/strong><\/span><\/h1>\n

Sau khi ho\u00e0n t\u1ea5t c\u00e1c th\u1eed nghi\u1ec7m tr\u00ean, d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m s\u1ebd \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u1ef1c quan. N\u1ed9i dung c\u1ee5 th\u1ec3 c\u1ea7n ki\u1ec3m tra bao g\u1ed3m: ki\u1ec3m tra b\u1ec1 m\u1eb7t d\u1ee5ng c\u1ee5 xem c\u00f3 r\u1ec9 s\u00e9t, h\u01b0 h\u1ecfng, n\u1ee9t v\u1ee1 v\u00e0 c\u00e1c b\u1ea5t th\u01b0\u1eddng kh\u00e1c kh\u00f4ng; C\u00e1c nh\u1eadn d\u1ea1ng v\u00e0 m\u00f4 t\u1ea3 v\u0103n b\u1ea3n c\u00f3 li\u00ean quan ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1eef r\u00f5 r\u00e0ng; C\u00e1c b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng ph\u1ea3i linh ho\u1ea1t v\u00e0 \u0111\u00e1ng tin c\u1eady; C\u00e1c ch\u1ed1t ph\u1ea3i kh\u00f4ng b\u1ecb l\u1ecfng l\u1ebbo.<\/span><\/span><\/p>\n

4.K\u1ebft lu\u1eadn<\/span><\/span><\/strong><\/span><\/h1>\n

Hi\u1ec7n nay, nhi\u1ec1u l\u0129nh v\u1ef1c s\u1ebd li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed. Kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u1ed9 th\u1ea5p c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u00f3 li\u00ean quan \u0111\u1ebfn nhi\u1ec1u c\u00f4ng vi\u1ec7c s\u1ea3n xu\u1ea5t quan tr\u1ecdng. Trong b\u00e0i b\u00e1o n\u00e0y, c\u00e1c y\u00eau c\u1ea7u v\u1ec1 m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 th\u1ea5p \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch chi ti\u1ebft v\u00e0 cung c\u1ea5p c\u01a1 s\u1edf khoa h\u1ecdc cho c\u00e1c c\u00f4ng ngh\u1ec7 li\u00ean quan.<\/span><\/span><\/p>\n

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<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

3.3 Y\u00eau c\u1ea7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m (1) Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m nhi\u1ec7t \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 gi\u1eefa m\u1ed7i b\u01b0\u1edbc nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 20\u2103\/h. Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, th\u1eed nghi\u1ec7m c\u00f3 li\u00ean quan ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n sau khi d\u1ee5ng c\u1ee5 th\u1eed nghi\u1ec7m \u0111\u1ea1t<\/p>\n","protected":false},"author":1,"featured_media":19824,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19823","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc-cong-nghe"],"acf":[],"_links":{"self":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/comments?post=19823"}],"version-history":[{"count":1,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19823\/revisions"}],"predecessor-version":[{"id":22062,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19823\/revisions\/22062"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19824"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}