{"id":15097,"date":"2021-11-27T17:27:39","date_gmt":"2021-11-27T10:27:39","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=15097"},"modified":"2021-11-27T17:27:40","modified_gmt":"2021-11-27T10:27:40","slug":"duong-ven-bien-va-mat-chuan-la-gi","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/duong-ven-bien-va-mat-chuan-la-gi\/","title":{"rendered":"\u0110\u01b0\u1eddng ven bi\u1ec3n v\u00e0 m\u1eb7t chu\u1ea9n l\u00e0 g\u00ec?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 7 &#8211; Arkady Leokum<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean tr\u00e1i \u0111\u1ea5t, gi\u1eefa m\u00e0u xanh da tr\u1eddi c\u1ee7a bi\u1ec3n v\u00e0 m\u00e0u xanh l\u00e1 c\u00e2y c\u1ee7a l\u1ee5c \u0111\u1ecba c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng, \u0111\u00f3 l\u00e0 \u0111\u01b0\u1eddng ven bi\u1ec3n. Ai \u0111\u00e3 t\u1eebng \u0111\u1ebfn b\u1edd bi\u1ec3n \u0111\u1ec1u bi\u1ebft: n\u01b0\u1edbc bi\u1ec3n l\u00fac d\u00e2ng l\u00fac h\u1ea1, chuy\u1ec3n \u0111\u1ed9ng li\u00ean t\u1ee5c, t\u00ecm ra m\u1ed9t \u0111\u01b0\u1eddng ti\u1ebfp x\u00fac gi\u1eefa bi\u1ec3n v\u00e0 l\u1ee5c \u0111\u1ecba th\u1eadt l\u00e0 kh\u00f3. Th\u1ee9c t\u1ebf c\u00f3 ba \u0111\u01b0\u1eddng ven.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01b0\u1eddng ven m\u1ef1c n\u01b0\u1edbc cao: n\u01b0\u1edbc bi\u1ec3n m\u1ed7i ng\u00e0y d\u00e2ng m\u1ed9t l\u1ea7n \u1edf m\u1ef1c cao nh\u1ea5t, m\u1ed7i n\u0103m c\u00f3 365 ng\u00e0y th\u00ec c\u00f3 365 m\u1ef1c n\u01b0\u1edbc cao nh\u1ea5t, d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p t\u00ednh b\u00ecnh qu\u00e2n \u0111\u1ec3 c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng m\u1ef1c n\u01b0\u1edbc b\u00ecnh qu\u00e2n cao nh\u1ea5t. Tr\u1ea3i qua m\u1ea5y n\u0103m ho\u1eb7c m\u1ea5y ch\u1ee5c n\u0103m \u0111o \u0111\u1ea1c m\u1ef1c n\u01b0\u1edbc cao nh\u1ea5t c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c m\u1ef1c n\u01b0\u1edbc b\u00ecnh qu\u00e2n cao nh\u1ea5t c\u1ee7a nhi\u1ec1u n\u0103m, \u0111\u01b0\u1eddng ti\u1ebfp x\u00fac c\u1ee7a m\u1ef1c n\u01b0\u1edbc n\u00e0y v\u1edbi l\u1ee5c \u0111\u1ecba g\u1ecdi l\u00e0 \u0111\u01b0\u1eddng ven m\u1ef1c n\u01b0\u1edbc cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01b0\u1eddng ven m\u1ef1c n\u01b0\u1edbc th\u1ea5p: gi\u1ed1ng nh\u01b0 ph\u01b0\u01a1ng ph\u00e1p tr\u00ean, c\u00f3 th\u1ec3 t\u00ednh ra m\u1ef1c n\u01b0\u1edbc b\u00ecnh qu\u00e2n th\u1ea5p nh\u1ea5t c\u1ee7a nhi\u1ec1u n\u0103m, \u0111\u01b0\u1eddng ti\u1ebfp x\u00fac c\u1ee7a m\u1ef1c n\u01b0\u1edbc n\u00e0y v\u1edbi l\u1ee5c \u0111\u1ecba g\u1ecdi l\u00e0 \u0111\u01b0\u1eddng ven m\u1ef1c n\u01b0\u1edbc th\u1ea5p. Nh\u1eefng qu\u1ed1c gia s\u00e1t bi\u1ec3n d\u00f9ng \u0111\u01b0\u1eddng ven m\u1ef1c n\u01b0\u1edbc th\u1ea5p \u0111\u1ec3 m\u1edf r\u1ed9ng di\u1ec7n t\u00edch qu\u1ed1c gia; d\u00f9ng \u0111\u01b0\u1eddng ven m\u1ef1c n\u01b0\u1edbc cao th\u00ec ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01b0\u1eddng ven m\u1ef1c n\u01b0\u1edbc b\u00ecnh qu\u00e2n: qu\u1ed1c t\u1ebf \u0111\u00e3 qui \u0111\u1ecbnh di\u1ec7n t\u00edch \u0111\u1ea5t qu\u1ed1c gia l\u00e0 c\u0103n c\u1ee9 theo \u0111\u01b0\u1eddng ven m\u1ef1c n\u01b0\u1edbc b\u00ecnh qu\u00e2n m\u00e0 x\u00e1c \u0111\u1ecbnh. M\u1ef1c n\u01b0\u1edbc b\u00ecnh qu\u00e2n l\u00e0 tr\u1ecb s\u1ed1 b\u00ecnh qu\u00e2n gi\u1eefa m\u1ef1c n\u01b0\u1edbc cao nh\u1ea5t v\u00e0 th\u1ea5p nh\u1ea5t, qua nhi\u1ec1u n\u0103m \u0111o \u0111\u1ea1c s\u1ebd \u0111\u01b0\u1ee3c tr\u1ecb s\u1ed1 m\u1ef1c n\u01b0\u1edbc b\u00ecnh qu\u00e2n nhi\u1ec1u n\u0103m. Tr\u1ecb s\u1ed1 n\u00e0y v\u1edbi \u0111\u01b0\u1eddng ti\u1ebfp x\u00fac l\u1ee5c \u0111\u1ecba ch\u00ednh l\u00e0 \u0111\u01b0\u1eddng ven m\u1ef1c n\u01b0\u1edbc b\u00ecnh qu\u00e2n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7t chu\u1ea9n th\u01b0\u1eddng d\u00f9ng c\u00f3 hai lo\u1ea1i: \u201cm\u1eb7t chu\u1ea9n \u0111\u1ed9 s\u00e2u\u201d v\u00e0 \u201cm\u1eb7t chu\u1ea9n b\u1eb1ng bi\u1ec3n\u201d, x\u00e1c \u0111\u1ecbnh ch\u00fang th\u1ebf n\u00e0o?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7t chu\u1ea9n \u0111\u1ed9 s\u00e2u: d\u00f9ng cho c\u1ea3ng, \u0111\u01b0\u1eddng h\u00e0ng h\u1ea3i v\u00e0 s\u00f4ng ng\u00f2i c\u1ea5p n\u01b0\u1edbc. Nh\u01b0: c\u1ea3ng v\u00e0 \u0111\u01b0\u1eddng h\u00e0ng h\u1ea3i ph\u1ea3i x\u00e1c \u0111\u1ecbnh \u1edf m\u1ef1c n\u01b0\u1edbc s\u00e2u nh\u01b0 th\u1ebf n\u00e0o m\u1edbi \u0111\u1ea3m b\u1ea3o an to\u00e0n cho t\u00e0u b\u00e8 qua l\u1ea1i v\u00e0 v\u00e0o c\u1ea3ng; x\u00e1c \u0111\u1ecbnh s\u00e2u s\u1ebd \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1ee3c an to\u00e0n, t\u00e0u b\u00e8 ra v\u00e0o c\u1ea3ng nhi\u1ec1u, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng b\u1ebfn c\u1ea3ng, \u0111\u01b0\u1eddng h\u00e0ng h\u1ea3i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cho n\u00ean, \u0111\u1ea3m b\u1ea3o m\u1eb7t b\u1eb1ng bi\u1ec3n c\u00f3 m\u1ed9t \u0111\u1ed9 s\u00e2u n\u00e0o \u0111\u00f3 ch\u00ednh l\u00e0 m\u1eb7t chu\u1ea9n \u0111\u1ed9 s\u00e2u. v\u00ec \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u1ea5p n\u01b0\u1edbc, s\u00f4ng, ng\u00f2i c\u0169ng ph\u1ea3i c\u00f3 m\u1ed9t \u0111\u1ed9 s\u00e2u nh\u1ea5t \u0111\u1ecbnh, \u0111\u1ed9 s\u00e2u c\u1ee7a m\u1eb7t n\u01b0\u1edbc s\u00f4ng ng\u00f2i n\u00e0y c\u0169ng ch\u00ednh l\u00e0 m\u1eb7t chu\u1ea9n \u0111\u1ed9 s\u00e2u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7t chu\u1ea9n m\u1eb7t b\u1eb1ng bi\u1ec3n: qua m\u1ed9t th\u1eddi gian d\u00e0i quan s\u00e1t v\u00e0 \u0111o \u0111\u1ea1c m\u1ef1c n\u01b0\u1edbc bi\u1ec3n, c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c v\u1ecb tr\u00ed b\u00ecnh qu\u00e2n m\u1eb7t b\u1eb1ng bi\u1ec3n, g\u1ecdi l\u00e0 m\u1eb7t chu\u1ea9n m\u1eb7t b\u1eb1ng bi\u1ec3n. M\u1eb7t chu\u1ea9n n\u00e0y \u0111\u01b0\u1ee3c coi l\u00e0 \u0111i\u1ec3m 0 c\u1ee7a \u0111\u1ed9 cao kh\u1edfi \u0111\u1ea7u t\u00ednh to\u00e1n c\u1ee7a m\u1ed9t khu v\u1ef1c ho\u1eb7c m\u1ed9t qu\u1ed1c gia v\u00e0 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u1eb7t chu\u1ea9n cao tr\u00ecnh. v\u00ec m\u1eb7t chu\u1ea9n cao tr\u00ecnh c\u00f3 th\u1ec3 thay \u0111\u1ed5i, n\u00ean sau v\u00e0i n\u0103m ph\u1ea3i d\u00f9ng thi\u1ebft b\u1ecb ch\u00ednh x\u00e1c \u0111o l\u01b0\u1eddng \u0111\u1ec3 hi\u1ec7u ch\u1ec9nh m\u1eb7t chu\u1ea9n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 7 &#8211; Arkady Leokum Tr\u00ean tr\u00e1i \u0111\u1ea5t, gi\u1eefa m\u00e0u xanh da tr\u1eddi c\u1ee7a bi\u1ec3n v\u00e0 m\u00e0u xanh l\u00e1 c\u00e2y c\u1ee7a l\u1ee5c \u0111\u1ecba c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng, \u0111\u00f3 l\u00e0 \u0111\u01b0\u1eddng ven bi\u1ec3n. Ai \u0111\u00e3 t\u1eebng \u0111\u1ebfn b\u1edd bi\u1ec3n \u0111\u1ec1u bi\u1ebft: n\u01b0\u1edbc bi\u1ec3n l\u00fac d\u00e2ng l\u00fac [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15],"tags":[],"class_list":["post-15097","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15097","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=15097"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15097\/revisions"}],"predecessor-version":[{"id":15098,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15097\/revisions\/15098"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=15097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=15097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=15097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}