M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft r\u1eb1ng, m\u1ed9t h\u00f2n \u0111\u00e1 nh\u1ecf t\u1eeb tr\u00ean cao r\u01a1i xu\u1ed1ng c\u00f3 th\u1ec3 \u0111\u1eadp r\u00e1ch \u0111\u1ea7u. Th\u1ebf th\u00ec v\u00ec sao m\u1ed9t di\u1ec5n vi\u00ean xi\u1ebfc c\u00f3 th\u1ec3 l\u1ea5y \u0111\u1ea7u \u0111\u1ee1 \u0111\u01b0\u1ee3c chi\u1ebfc v\u00f2 t\u1eeb tr\u00ean cao r\u01a1i xu\u1ed1ng m\u00e0 kh\u00f4ng b\u1ecb h\u1ec1 h\u1ea5n g\u00ec c\u1ea3 nh\u1ec9?<\/p>\n\n\n\n
Th\u00ec ra, khi ch\u00fang ta ti\u1ebfp l\u1ea5y m\u1ed9t v\u1eadt th\u1ec3 t\u1eeb tr\u00ean cao r\u01a1i xu\u1ed1ng, ch\u1eb3ng nh\u1eefng ta ph\u1ea3i ch\u1ecbu t\u00e1c \u0111\u1ed9ng tr\u1ecdng l\u1ef1c c\u1ee7a b\u1ea3n th\u00e2n v\u1eadt th\u1ec3, m\u00e0 c\u00f2n ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u1ed9t xung l\u1ef1c. \u0110\u1ed9 l\u1edbn c\u1ee7a xung l\u1ef1c n\u00e0y kh\u00f4ng ph\u1ea3i c\u1ed1 \u0111\u1ecbnh kh\u00f4ng \u0111\u1ed5i. N\u00f3 c\u00f3 quan h\u1ec7 v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt th\u1ec3 v\u00e0 t\u1ed1c \u0111\u1ed9 v\u0103ng t\u1edbi, v\u00e0 c\u00f2nquan h\u1ec7 c\u1ea3 v\u1edbi \u0111\u1ed9 nhanh ch\u1eadm khi ch\u00fang ta l\u00e0m cho n\u00f3 d\u1eebng l\u1ea1i. V\u1eadt th\u1ec3 n\u1eb7ng, t\u1ed1c \u0111\u1ed9 l\u1edbn v\u00e0 d\u1eebng nhanh \u0111\u1ec1u l\u00e0m cho xung l\u1ef1c t\u0103ng l\u00ean. N\u1ebfu ch\u00fang ta c\u00f3 c\u00e1ch g\u00ec l\u00e0m cho n\u00f3 d\u1eebng l\u1ea1i ch\u1ea7m ch\u1eadm th\u00ec c\u00f3 th\u1ec3 gi\u1ea3m nh\u1ecf lo\u1ea1i xung l\u1ef1c \u0111\u00f3.<\/p>\n\n\n\n
B\u1ea1n h\u00e3y th\u1eed l\u00e0m xem. Tung m\u1ed9t x\u00e2u ch\u00eca kho\u00e1 l\u00ean cao 3 – 5 m\u00e9t, \u0111\u1ee3i khi n\u00f3 r\u01a1i xu\u1ed1ng th\u00ec xo\u00e8 l\u00f2ng b\u00e0n tay ra gi\u1eef y\u00ean, m\u1eb7c cho x\u00e2u ch\u00eca kho\u00e1 r\u01a1i v\u00e0o. L\u00f2ng b\u00e0n tay s\u1ebd c\u1ea3m th\u1ea5y r\u1ea5t \u0111au. N\u1ebfu ch\u00fang ta ch\u0103m ch\u00fa nh\u00ecn k\u0129 x\u00e2u ch\u00eca kho\u00e1 \u0111ang r\u01a1i xu\u1ed1ng, khi n\u00f3 s\u1eafp r\u01a1i \u0111\u1ebfn b\u00e0n tay, m\u00e0 tay c\u0169ng thu\u1eadn \u0111\u00e0 h\u1ea1 xu\u1ed1ng m\u1ed9t \u0111o\u1ea1n ng\u1eafn, l\u00e0m cho n\u00f3 t\u1eeb t\u1eeb d\u1eebng l\u1ea1i trong b\u00e0n tay, l\u00f2ng b\u00e0n tay s\u1ebd kh\u00f4ng c\u1ea3m th\u1ea5y \u0111au m\u1ea5y. C\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng, d\u00f9ng c\u00e1ch th\u1ee9 hai \u0111\u1ec3 h\u1ee9ng x\u00e2u ch\u00eca kho\u00e1 th\u00ec xung l\u1ef1c c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi b\u00e0n tay s\u1ebd l\u00e0 kh\u00f4ng \u0111\u00e1ng k\u1ec3. Ch\u00fang ta g\u1ecdi lo\u1ea1i t\u00e1c d\u1ee5ng \u0111\u00f3 l\u00e0 t\u00e1c d\u1ee5ng ho\u00e0 ho\u00e3n. B\u00e2y gi\u1edd ch\u00fang ta tr\u1edf l\u1ea1i xem tr\u01b0\u1eddng h\u1ee3p di\u1ec5n vi\u00ean xi\u1ebfc bi\u1ec3u di\u1ec5n ti\u1ebft m\u1ee5c \u0111\u1ee1 v\u00f2 nh\u01b0 th\u1ebf n\u00e0o.<\/p>\n\n\n\n
Chi\u1ebfc v\u00f2 d\u00f9ng \u0111\u1ec3 bi\u1ec3u di\u1ec5n ti\u1ebft m\u1ee5c n\u00e0y th\u01b0\u1eddng l\u00e0 kh\u00f4ng n\u1eb7ng h\u01a1n 10 kg. N\u1ebfu \u0111\u1ed9i n\u00f3 tr\u00ean \u0111\u1ea7u gi\u1eef y\u00ean th\u00ec c\u0169ng ch\u1eb3ng ph\u1ea3i \u0111i\u1ec1u g\u00ec m\u1edbi m\u1ebb, h\u1ea7u nh\u01b0 ai ai c\u0169ng l\u00e0m \u0111\u01b0\u1ee3c. N\u1ebfu tung chi\u1ebfc v\u00f2 l\u00ean cao, \u0111\u1ee3i khi n\u00f3 r\u01a1i xu\u1ed1ng th\u00ec \u0111\u01b0a \u0111\u1ea7u ra h\u1ee9ng l\u1ea5y th\u00ec ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng kh\u00f3 m\u00e0 ch\u1ecbu \u0111\u1ef1ng \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n
N\u1ebfu b\u1ea1n ch\u1ecbu kh\u00f3 quan s\u00e1t k\u0129 s\u1ebd nh\u1eadn th\u1ea5y, khi di\u1ec5n vi\u00ean xi\u1ebfc \u0111\u01b0a \u0111\u1ea7u ra h\u1ee9ng l\u1ea5y chi\u1ebfc v\u00f2, anh ta kh\u00f4ng h\u1ec1 \u0111\u1ee9ng y\u00ean kh\u00f4ng \u0111\u1ed9ng \u0111\u1eady, m\u00e0 bao gi\u1edd c\u0169ng dang hai ch\u00e2n ra \u0111\u1ee9ng v\u1eefng \u1edf t\u01b0 th\u1ebf xu\u1ed1ng t\u1ea5n tr\u01b0\u1edbc \u0111\u00e3. Khi chi\u1ebfc v\u00f2 r\u01a1i xu\u1ed1ng v\u1eeba ch\u1ea1m v\u00e0o \u0111\u1ec9nh \u0111\u1ea7u, anh ta l\u1eadp t\u1ee9c th\u1ee5p xu\u1ed1ng theo \u0111\u00e0 r\u01a1i c\u1ee7a chi\u1ebfc v\u00f2. \u0110i\u1ec1u \u0111\u00f3 gi\u1ed1ng nh\u01b0 c\u00e1ch th\u1ee9c b\u1ea1n h\u1ea1 tay xu\u1ed1ng \u0111\u1ec3 h\u1ee9ng x\u00e2u ch\u00eca kho\u00e1, xung l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean \u0111\u1ea7u b\u1ea1n kh\u00f4ng c\u00f2n l\u1edbn l\u1eafm. N\u1ebfu v\u00f2 r\u01a1i xu\u1ed1ng t\u1eeb \u0111\u1ed9 cao 1 m, v\u00e0 th\u1eddi gian l\u00e0m cho chuy\u1ec3n \u0111\u1ed9ng d\u1eebng l\u1ea1i k\u00e9o d\u00e0i kho\u1ea3ng 2gi\u00e2y, xung l\u1ef1c l\u00ean tr\u00ean \u0111\u1ea7u kh\u00f4ng h\u01a1n 200 N Ng\u01b0\u1eddi \u0111\u00e3 qua luy\u1ec7n t\u1eadp l\u00e2u ng\u00e0y ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u1ef1ng \u0111\u01b0\u1ee3c m\u1ed9t l\u1ef1c c\u1ee1 \u0111\u00f3.<\/p>\n\n\n\n
Song, m\u1ed9t ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng ch\u01b0a qua hu\u1ea5n luy\u1ec7n, ch\u1ec9 hi\u1ec3u \u0111\u01b0\u1ee3c nguy\u00ean l\u00ed th\u00f4i th\u00ec nh\u1ea5t thi\u1ebft kh\u00f4ng \u0111\u01b0\u1ee3c li\u1ec1u l\u0129nh l\u00e0m th\u1eed. R\u1ea5t nguy hi\u1ec3m \u0111\u1ea5y!<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Xung l\u1ef1c; T\u00e1c d\u1ee5ng ho\u00e0 ho\u00e3n.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft r\u1eb1ng, m\u1ed9t h\u00f2n \u0111\u00e1 nh\u1ecf t\u1eeb tr\u00ean cao r\u01a1i xu\u1ed1ng c\u00f3 th\u1ec3 \u0111\u1eadp r\u00e1ch \u0111\u1ea7u. Th\u1ebf th\u00ec v\u00ec sao m\u1ed9t di\u1ec5n vi\u00ean xi\u1ebfc c\u00f3 th\u1ec3 l\u1ea5y \u0111\u1ea7u \u0111\u1ee1 \u0111\u01b0\u1ee3c chi\u1ebfc v\u00f2 t\u1eeb tr\u00ean cao r\u01a1i xu\u1ed1ng m\u00e0 kh\u00f4ng b\u1ecb h\u1ec1 h\u1ea5n g\u00ec c\u1ea3 nh\u1ec9? Th\u00ec ra, khi ch\u00fang ta ti\u1ebfp l\u1ea5y […]<\/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":[15,7],"tags":[],"class_list":["post-5537","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5537","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=5537"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5537\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}