{"id":6960,"date":"2021-12-31T09:02:21","date_gmt":"2021-12-31T09:02:21","guid":{"rendered":"https:\/\/cokhitanminh.com\/may-dong-goi\/?p=6960"},"modified":"2021-12-31T09:02:59","modified_gmt":"2021-12-31T09:02:59","slug":"moi-truong-chan-khong-la-gi","status":"publish","type":"post","link":"https:\/\/cokhitanminh.com\/may-dong-goi\/moi-truong-chan-khong-la-gi\/","title":{"rendered":"M\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng l\u00e0 g\u00ec"},"content":{"rendered":"<p><a href=\"https:\/\/cokhitanminh.com\/may-dong-goi\/moi-truong-chan-khong-la-gi\/\"><em><strong>M\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng l\u00e0 g\u00ec<\/strong><\/em><\/a><\/p>\n<p><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;M\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng l\u00e0 g\u00ec&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:769,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:3,&quot;12&quot;:0}\">Nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a m\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft nh\u01b0 sau:<\/span><\/p>\n<div id=\"toc_container\" class=\"no_bullets\">\n<p class=\"toc_title\">Danh m\u1ee5c:<\/p>\n<ul class=\"toc_list\">\n<li><span class=\"toc_number toc_depth_1\">1<\/span>\u00a0\u00c1p su\u1ea5t ch\u00e2n kh\u00f4ng l\u00e0 g\u00ec?\n<ul>\n<li><span class=\"toc_number toc_depth_2\">1.1<\/span>\u00a0V\u00ec sao l\u1ea1i g\u1ecdi l\u00e0 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng?<\/li>\n<li><span class=\"toc_number toc_depth_2\">1.2<\/span>\u00a0\u1ee8ng d\u1ee5ng c\u1ee7a \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng:<\/li>\n<li><span class=\"toc_number toc_depth_2\">1.3<\/span>\u00a0C\u00e1c \u0111\u01a1n v\u1ecb \u0111o \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng:<\/li>\n<li><span class=\"toc_number toc_depth_2\">1.4<\/span>\u00a0\u0110\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng:<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<p>Ai \u0111\u00e3 t\u1eebng nghe \u0111\u1ebfn \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng ho\u1eb7c \u00e1p su\u1ea5t \u00e2m? V\u1eady b\u1ea1n \u0111\u00e3 t\u00ecm hi\u1ec3u v\u1ec1 n\u00f3 ch\u01b0a\u00a0 v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng nh\u01b0 th\u1ebf n\u00e0o ?<\/p>\n<figure id=\"attachment_4255\" class=\"wp-caption aligncenter\"><figcaption class=\"wp-caption-text\">\u00c1p su\u1ea5t ch\u00e2n kh\u00f4ng l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p>Trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u1ee7a \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng trong c\u00f4ng nghi\u1ec7p m\u00e0 c\u00f3 th\u1ec3 b\u1ea1n kh\u00f4ng nh\u1eadn ra.<\/p>\n<p>H\u00e3y c\u00f9ng m\u00ecnh t\u00ecm hi\u1ec3u v\u1ec1 kh\u00e1i ni\u1ec7m \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng l\u00e0 g\u00ec trong b\u00e0i vi\u1ebft sau:<\/p>\n<h3><span id=\"Ap_suat_chan_khong_la_gi\">\u00c1p su\u1ea5t ch\u00e2n kh\u00f4ng l\u00e0 g\u00ec?<\/span><\/h3>\n<p>Tr\u01b0\u1edbc ti\u00ean, ta c\u1ea7n \u0111\u1ecbnh ngh\u0129a \u00e1p su\u1ea5t l\u00e0 g\u00ec?<\/p>\n<p>Theo nh\u01b0 wikipedia:\u00a0<em>\u201c\u00e1p su\u1ea5t l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd, \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 l\u1ef1c tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch t\u00e1c d\u1ee5ng theo chi\u1ec1u vu\u00f4ng g\u00f3c v\u1edbi b\u1ec1 m\u1eb7t c\u1ee7a v\u1eadt th\u1ec3. Trong h\u1ec7 SI, \u0111\u01a1n v\u1ecb c\u1ee7a \u00e1p su\u1ea5t b\u1eb1ng Newton tr\u00ean m\u00e9t vu\u00f4ng, n\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Pascal mang t\u00ean nh\u00e0 to\u00e1n h\u1ecdc v\u00e0 v\u1eadt l\u00fd ng\u01b0\u1eddi Ph\u00e1p Blaise Pascal th\u1ebf k\u1ec9 th\u1ee9 17\u201d<\/em><\/p>\n<p>V\u1eady th\u00ec\u00a0<em><strong>\u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng<\/strong><\/em>\u00a0l\u00e0 g\u00ec?<\/p>\n<p>\u00c1p su\u1ea5t ch\u00e2n kh\u00f4ng ch\u00ednh l\u00e0 gi\u00e1 tr\u1ecb \u00e1p su\u1ea5t c\u1ee7a l\u01b0\u1ee3ng v\u1eadt ch\u1ea5t c\u00f2n l\u1ea1i trong m\u1ed9t kho\u1ea3ng kh\u00f4ng gian nh\u1ea5t \u0111\u1ecbnh. Gi\u00e1 tr\u1ecb \u00e1p su\u1ea5t s\u1ebd t\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi s\u1ed1 l\u01b0\u1ee3ng v\u1eadt ch\u1ea5t trong \u0111\u00f3. Ngh\u0129a l\u00e0 khi \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng c\u00e0ng cao th\u00ec l\u01b0\u1ee3ng v\u1eadt ch\u1ea5t trong m\u00f4i tr\u01b0\u1eddng c\u00e0ng \u00edt \u0111i.<\/p>\n<h3><span id=\"Vi_sao_lai_goi_la_ap_suat_chan_khong\">V\u00ec sao l\u1ea1i g\u1ecdi l\u00e0 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng?<\/span><\/h3>\n<p>Ch\u00e2n kh\u00f4ng, trong l\u00fd thuy\u1ebft c\u1ed5 \u0111i\u1ec3n, l\u00e0 kh\u00f4ng gian kh\u00f4ng ch\u1ee9a v\u1eadt ch\u1ea5t. T\u1eeb xu\u1ea5t ph\u00e1t t\u1eeb t\u1eeb Latin vacuus ngh\u0129a l\u00e0 \u201ctr\u1ed1ng\u201d ho\u1eb7c \u201ckho\u1ea3ng tr\u1ed1ng\u201d.Nh\u01b0 v\u1eady ch\u00e2n kh\u00f4ng c\u00f3 th\u1ec3 t\u00edch kh\u00e1c kh\u00f4ng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng (v\u00e0 do \u0111\u00f3 n\u0103ng l\u01b0\u1ee3ng) b\u1eb1ng kh\u00f4ng. Do kh\u00f4ng c\u00f3 v\u1eadt ch\u1ea5t b\u00ean trong, ch\u00e2n kh\u00f4ng l\u00e0 n\u01a1i kh\u00f4ng c\u00f3 \u00e1p su\u1ea5t.<\/p>\n<p>V\u00ec th\u1ebf, c\u00f3 th\u1ec3 n\u00f3i l\u00e0 trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng s\u1ebd kh\u00f4ng c\u00f2n b\u1ea5t k\u1ef3 m\u1ed9t v\u1eadt ch\u1ea5t n\u00e0o trong \u0111\u00f3. V\u00e0 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng c\u0169ng \u0111\u01b0\u1ee3c xem nh\u01b0 l\u00e0 \u00e1p su\u1ea5t tuy\u1ec7t \u0111\u1ed1i.<\/p>\n<h3><span id=\"Ung_dung_cua_ap_suat_chan_khong\">\u1ee8ng d\u1ee5ng c\u1ee7a \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng:<\/span><\/h3>\n<p>Trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y c\u00f3 kh\u00e1 nhi\u1ec1u nh\u1eefng \u1ee9ng d\u1ee5ng c\u1ee7a \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng . Trong \u0111\u00f3 \u1ee9ng d\u1ee5ng th\u01b0\u1eddng ng\u00e0y, ta c\u00f3 th\u1ec3 th\u1ea5y d\u1ec5 nh\u1ea5t ch\u00ednh l\u00e0 trong c\u00e1c m\u00e1y h\u00fat ch\u00e2n kh\u00f4ng.<\/p>\n<p>M\u00e1y h\u00fat ch\u00e2n kh\u00f4ng l\u00e0 m\u1ed9t lo\u1ea1i m\u00e1y h\u00fat kh\u00ed. Ng\u01b0\u1eddi ta th\u01b0\u1eddng d\u00f9ng \u0111\u1ec3 b\u1ea3o qu\u1ea3n th\u1ef1c ph\u1ea9m. Hi\u1ec7n nay th\u00ec c\u0169ng c\u00f3 kh\u00e1 nhi\u1ec1u gia \u0111\u00ecnh c\u00f3 trang b\u1ecb lo\u1ea1i m\u00e1y h\u00fat ch\u00e2n kh\u00f4ng n\u00e0y.<\/p>\n<p>Tuy nhi\u00ean, trong c\u00f4ng nghi\u1ec7p th\u00ec \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng trong c\u00e1c m\u00e1y b\u01a1m h\u00fat ch\u00e2n kh\u00f4ng. \u0110\u00e2y l\u00e0 nh\u1eefng lo\u1ea1i m\u00e1y h\u00fat ch\u00e2n kh\u00f4ng c\u00f3 c\u00f4ng su\u1ea5t l\u1edbn. M\u1ee5c \u0111\u00edch l\u00e0 \u0111\u1ec3 th\u1ef1c hi\u1ec7n nh\u1eefng t\u00e1c v\u1ee5:<\/p>\n<ul>\n<li>Trong c\u00e1c m\u00e1y gia c\u00f4ng CNC v\u00e0 m\u00e1y ch\u1ebf t\u1ea1o VAC, s\u1eed d\u1ee5ng l\u1ef1c h\u00fat ch\u00e2n kh\u00f4ng \u1edf b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac gi\u1eefa c\u00e1c chi ti\u1ebft gia c\u00f4ng v\u00e0 m\u00e2m gi\u1eef. \u0110i\u1ec1u n\u00e0y gi\u00fap cho c\u00e1c chi ti\u1ebft \u0111\u01b0\u1ee3c gi\u1eef ch\u1eb7t m\u1ed9t c\u00e1ch an to\u00e0n tr\u00ean m\u00e2m, gi\u00fap cho qu\u00e1 tr\u00ecnh gia c\u00f4ng ch\u1ebf t\u1ea1o \u0111\u01b0\u1ee3c di\u1ec5n ra m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 nhanh ch\u00f3ng.<\/li>\n<\/ul>\n<figure id=\"attachment_4256\" class=\"wp-caption aligncenter\"><figcaption class=\"wp-caption-text\">\u1ee8ng d\u1ee5ng c\u1ee7a m\u00e1y b\u01a1m h\u00fat ch\u00e2n kh\u00f4ng trong m\u00e1y c\u1eaft CNC<\/figcaption><\/figure>\n<ul>\n<li>C\u00f2n trong c\u00e1c nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m, b\u1ed9t \u0111\u00e1, ch\u1ebf bi\u1ebfn nh\u1ef1a, h\u00f3a h\u1ecdc, ng\u00e0nh d\u01b0\u1ee3c, s\u1eed d\u1ee5ng b\u01a1m h\u00fat ch\u00e2n kh\u00f4ng v\u00e0 m\u00e1y th\u1ed5i \u0111\u1ec3 v\u1eadn chuy\u1ec3n c\u00e1c lo\u1ea1i b\u1ed9t.<\/li>\n<li>Th\u1ef1c hi\u1ec7n ki\u1ec3m tra ph\u00f4i s\u1ea3n ph\u1ea9m (chai \u1ed1ng), linh ki\u1ec7n (h\u00fat gi\u1eef s\u1ea3n ph\u1ea9m b\u1eb1ng ch\u00e2n kh\u00f4ng) trong c\u00e1c d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t chai nh\u1ef1a.<\/li>\n<li>Th\u1ed5i bay v\u00e0 l\u00e0m s\u1ea1ch h\u1ebft n\u01b0\u1edbc(l\u00e0m kh\u00f4), v\u00e0 b\u1ee5i ra kh\u1ecfi s\u1ea3n ph\u1ea9m, linh ki\u1ec7n tr\u01b0\u1edbc khi \u0111\u00f3ng g\u00f3i.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6961\" src=\"https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi.jpg\" alt=\"\" width=\"500\" height=\"333\" \/><\/a><\/p>\n<p>H\u00ecnh \u1ea3nh s\u1ea3n ph\u1ea9m h\u00fat ch\u00e2n kh\u00f4ng<\/p>\n<p><a href=\"https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6962\" src=\"https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-1-300x300.jpg\" alt=\"\" width=\"500\" height=\"500\" srcset=\"https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-1-300x300.jpg 300w, https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-1-150x150.jpg 150w, https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-1-100x100.jpg 100w, https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-1.jpg 350w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<p>M\u00e1y h\u00fat ch\u00e2n kh\u00f4ng\u00a0trong c\u00f4ng ngh\u1ec7 \u0111\u00f3ng g\u00f3i s\u1ea3n ph\u1ea9m<\/p>\n<h3><span id=\"Cac_don_vi_do_ap_suat_chan_khong\">C\u00e1c \u0111\u01a1n v\u1ecb \u0111o \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng:<\/span><\/h3>\n<p>\u00c1p su\u1ea5t ch\u00e2n kh\u00f4ng hay c\u00f2n g\u1ecdi l\u00e0 \u0111\u1ed9 ch\u00e2n kh\u00f4ng, th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi \u0111\u01a1n v\u1ecb Torr, mBar, Pa, mmHg [abs]\u2026<\/p>\n<figure id=\"attachment_4257\" class=\"wp-caption aligncenter\"><figcaption class=\"wp-caption-text\">C\u00e1c b\u1ea1n quan t\u00e2m t\u00ecm hi\u1ec3u th\u00eam : \u0110\u01a1n v\u1ecb \u0111o \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng<\/figcaption><\/figure>\n<h3><span id=\"Dong_ho_do_ap_suat_chan_khong\">\u0110\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng:<\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 lo\u1ea1i \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t chuy\u00ean d\u00f9ng \u0111\u1ec3 \u0111o \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng. Lo\u1ea1i \u0111\u1ed3ng h\u1ed3 n\u00e0y c\u00f3 d\u1ea3i \u0111o h\u01a1i \u2026l\u1ea1 h\u01a1n so v\u1edbi c\u00e1c lo\u1ea1i\u00a0<em><strong>\u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t<\/strong><\/em>\u00a0th\u00f4ng th\u01b0\u1eddng.<\/p>\n<p>B\u1edfi v\u00ec d\u1ea3i \u0111o c\u1ee7a \u0111\u1ed3ng h\u1ed3 s\u1ebd \u0111i t\u1eeb gi\u00e1 tr\u1ecb nh\u1ecf nh\u1ea5t l\u00e0 -1 (\u00e2m 1) v\u00e0 \u0111\u1ea1t gi\u00e1 tr\u1ecb l\u1edbn nh\u1ea5t l\u00e0 1bar. C\u00f3 th\u1ec3 tham kh\u1ea3o th\u00eam th\u00f4ng tin v\u1ec1 \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng t\u1ea1i \u0111\u1ecba ch\u1ec9:<\/p>\n<p><em><strong>\u0110\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng\u00a0<\/strong><\/em><\/p>\n<figure id=\"attachment_4258\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6963\" src=\"https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-2-251x300.jpg\" alt=\"\" width=\"500\" height=\"598\" srcset=\"https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-2-251x300.jpg 251w, https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-2-600x717.jpg 600w, https:\/\/cokhitanminh.com\/may-dong-goi\/wp-content\/uploads\/2021\/12\/moi-truong-chan-khong-la-gi-2.jpg 768w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption class=\"wp-caption-text\">\u0110\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng h\u00e3ng\u00a0<\/figcaption><\/figure>\n<p>T\u00f9y theo t\u1eebng \u1ee9ng d\u1ee5ng \u0111o \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng m\u00e0 ta s\u1ebd c\u00f3 c\u00e1c lo\u1ea1i \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng sau:<\/p>\n<ul>\n<li>\u0110\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng -1 \u0111\u1ebfn 0 bar.<\/li>\n<li>\u0110\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng -1 \u0111\u1ebfn 1 bar.<\/li>\n<\/ul>\n<p>Ho\u1eb7c c\u00e1c lo\u1ea1i \u0111\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t \u00e2m c\u00f3 d\u1ea3i \u0111o r\u1ed9ng h\u01a1n nh\u01b0:<\/p>\n<ul>\n<li>\u0110\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng -1 \u0111\u1ebfn 2 bar.<\/li>\n<li>\u0110\u1ed3ng h\u1ed3 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng -1 \u0111\u1ebfn 3 bar.<\/li>\n<\/ul>\n<p>Tr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng th\u00f4ng tin m\u00ecnh mu\u1ed1n chia s\u1ebb v\u1ec1 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng. Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y c\u00f3 th\u1ec3 cung c\u1ea5p cho b\u1ea1n nh\u1eefng ki\u1ebfn th\u1ee9c b\u1ed5 \u00edch.<\/p>\n<p><em><strong>M\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng l\u00e0 g\u00ec<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng l\u00e0 g\u00ec Nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a m\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft nh\u01b0 sau: Danh m\u1ee5c: 1\u00a0\u00c1p su\u1ea5t ch\u00e2n kh\u00f4ng l\u00e0 g\u00ec? 1.1\u00a0V\u00ec sao l\u1ea1i g\u1ecdi l\u00e0 \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng? 1.2\u00a0\u1ee8ng d\u1ee5ng c\u1ee7a \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng: 1.3\u00a0C\u00e1c \u0111\u01a1n v\u1ecb \u0111o \u00e1p su\u1ea5t ch\u00e2n kh\u00f4ng: 1.4\u00a0\u0110\u1ed3ng h\u1ed3 \u0111o &#8230;<\/p>\n","protected":false},"author":1,"featured_media":6962,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6960","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.6 - 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