Bu\u1ed1i t\u1ed1i m\u00f9a thu, trong l\u00f9m c\u1ecf, d\u01b0\u1edbi g\u00f3c t\u01b0\u1eddng th\u01b0\u1eddng s\u1ebd ph\u00e1t ra ti\u1ebfng “tu\u00fdt ! tu\u00fdt !”, \u0111\u00e2y l\u00e0 ti\u1ebfng k\u00eau c\u1ee7a con d\u1ebf – lo\u00e0i c\u00f4n tr\u00f9ng m\u00e0 c\u00e1c b\u1ea1n nh\u1ecf r\u1ea5t th\u00edch. \u0110i\u1ec1u th\u00fa v\u1ecb l\u00e0 ti\u1ebfng k\u00eau vang n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u01b0\u1ee3c ph\u00e1t ra t\u1eeb trong mi\u1ec7ng c\u1ee7a con d\u1ebf, m\u00e0 l\u00e0 \u0111\u01b0\u1ee3c ph\u00e1t sinh th\u00f4ng qua s\u1ef1 ma s\u00e1t gi\u1eefa \u0111\u00f4i c\u00e1nh.<\/p>\n\n\n\n
D\u1ebf tr\u01b0\u1edfng th\u00e0nh th\u01b0\u1eddng th\u1ea5y \u0111\u1ec1u c\u00f3 hai \u0111\u00f4i c\u00e1nh. C\u00e1nh tr\u01b0\u1edbc t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee9ng, c\u00f3 t\u00e1c d\u1ee5ng ph\u00e1t ti\u1ebfng k\u00eau v\u00e0 b\u1ea3o v\u1ec7 c\u01a1 th\u1ec3; c\u00e1nh sau m\u1ec1m c\u00f3 t\u00e1c d\u1ee5ng bay l\u01b0\u1ee3n. C\u00e1nh tr\u01b0\u1edbc c\u1ee7a d\u1ebf \u0111\u1ef1c th\u00f4ng th\u01b0\u1eddng c\u00f3 c\u00e1c lo\u1ea1i g\u00e2n c\u00e1nh \u0111an xen ngang d\u1ecdc ho\u1eb7c song song, gi\u1eefa g\u00e2n c\u00e1nh h\u00ecnh th\u00e0nh c\u1eeda s\u1ed1 c\u00e1nh trong su\u1ed1t. M\u1ed9t \u0111\u01b0\u1eddng g\u00e2n c\u1ee7a hai c\u00e1nh tr\u01b0\u1edbc r\u1ea5t to, tr\u1edf th\u00e0nh c\u01a1 quan ph\u00e1t \u00e2m c\u1ee7a lo\u00e0i d\u1ebf: ph\u00eda d\u01b0\u1edbi g\u00e2n ngang c\u1ee7a c\u00e1nh ph\u1ea3i tr\u01b0\u1edbc c\u00f3 m\u1ecdc m\u1ed9t lo\u1ea1t h\u00ecnh r\u0103ng c\u01b0a n\u1ed5i l\u00ean, h\u00ecnh th\u00e0nh r\u0103ng ph\u00e1t \u00e2m.<\/p>\n\n\n\n
Khi d\u1ebf \u0111\u1ef1c k\u00eau, r\u0103ng ph\u00e1t \u00e2m c\u1ee7a c\u00e1nh ph\u1ea3i tr\u01b0\u1edbc v\u00e0 g\u00e2n ngang c\u1ee7a c\u00e1nh tr\u00e1i tr\u01b0\u1edbc kh\u00f4ng ng\u1eebng ma s\u00e1t ph\u00e1t ra \u00e2m thanh, gi\u1ed1ng nh\u01b0 chi\u1ebfc cung c\u1ee7a \u0111\u00e0n vi\u00f4l\u00f4ng kh\u00f4ng ng\u1eebng ma s\u00e1t v\u00e0o d\u00e2y \u0111\u00e0n, \u00e2m ph\u00e1t ra \u0111\u01b0\u1ee3c c\u1ed9ng h\u01b0\u1edfng \u1edf c\u1eeda s\u1ed5 c\u00e1nh trong su\u1ed1t. M\u1ed9t con d\u1ebf c\u01a1 th\u1ec3 ch\u1ec9 d\u00e0i c\u00f3 m\u01b0\u1eddi m\u1ea5y milim\u00e9t c\u00f3 th\u1ec3 ph\u00e1t ti\u1ebfng k\u00eau r\u1ea5t vang, khi d\u1ebf s\u1ed1ng \u1edf trong hang, khe g\u1ea1ch, k\u1ebd \u0111\u00e1 k\u00eau, nh\u1edd t\u00e1c d\u1ee5ng ph\u00f3ng thanh c\u1ee7a n\u01a1i \u1edf, ti\u1ebfng k\u00eau s\u1ebd c\u00e0ng vang h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":"
Bu\u1ed1i t\u1ed1i m\u00f9a thu, trong l\u00f9m c\u1ecf, d\u01b0\u1edbi g\u00f3c t\u01b0\u1eddng th\u01b0\u1eddng s\u1ebd ph\u00e1t ra ti\u1ebfng “tu\u00fdt ! tu\u00fdt !”, \u0111\u00e2y l\u00e0 ti\u1ebfng k\u00eau c\u1ee7a con d\u1ebf – lo\u00e0i c\u00f4n tr\u00f9ng m\u00e0 c\u00e1c b\u1ea1n nh\u1ecf r\u1ea5t th\u00edch. \u0110i\u1ec1u th\u00fa v\u1ecb l\u00e0 ti\u1ebfng k\u00eau vang n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u01b0\u1ee3c ph\u00e1t ra t\u1eeb trong mi\u1ec7ng c\u1ee7a con […]<\/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":[15,10],"tags":[],"class_list":["post-8322","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-sinh-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8322","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=8322"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8322\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}