Sharks tau tshaj tawm tias ua mob rau tus txiv neej los ntawm lwm yam tsis yog tom. Ib qho ntawm cov no suav nrog "kev sib tsoo," uas tus shark ua rau ze ze ntawm tus neeg raug tsim txom. Qhov kev txiav txim no yuav ua rau muaj kab mob thiab tawg ntawm daim tawv nqaij tawv [2, 3].
daim tawv nqaij shark zoo li cas?
4. Shark tawv nqaij zoo ib yam li ntawv xuab zeb. Shark daim tawv nqaij zoo nkaus li zoo li cov ntawv xuab zeb vim nws yog tsim los ntawm cov hniav me me zoo li cov nplais hu ua placoid nplai, los yog dermal denticles. Cov nplai no taw rau tus Tsov tus tw thiab pab txo kev sib txhuam los ntawm cov dej nyob ib puag ncig thaum tus shark ua luam dej.
Yuav ua li cas yog tias koj rub tus shark txoj kev tsis ncaj ncees lawm?
Lawv pw tiaj tus kom ua hydrodynamic hauv dej thaum lub shark txav. Tab sis rub tus shark rov qab los ntawm tus Tsov tus tw mus rau lub taub hau, thiab nws yuav hnov ntxhiab, zoo li daim ntawv xuab zeb, vim koj yuav rub " tawm tsam cov nplej."
Yuav tau riam hlais daim tawv nqaij?
Txias tawm ntau npaum li dej los ntawm daim tawv nqaij shark. … Yog hais tias koj tsis muaj ib tug nkaum scraper, siv koj cov riam (tsis yog butter riam, tab sis ib tug ntse riam) ntawm ib tug kaum sab xis 90 degree. Ceev faj tsis txhob txiav rau ntawm daim tawv nqaij.
Puas yog daim tawv nqaij tawv thiab scaly?
High magnification ntawm sharks tawv nqaij. Cov hniav no yog dab tsi ua rau shark xav ntxhibthiab dab tsi tau coj mus rau kev siv cov tawv nqaij shark li ntawv xuab zeb. Cov tawv nqaij yog ntxhib heev, qhov tseeb, cov tsiaj softer txhuam tawm tsam nws tuaj yeem ua taumob siab heev.
