Lub luag haujlwm tseem ceeb ntawm cov hniav no yog rau kev tiv thaiv cov tsiaj nyeg, zoo li ib qho tshwm sim ib txwm muaj chainmail armor, txawm hais tias hauv qee cov sharks lawv muaj hydrodynamic muaj nuj nqi. Cov denticles txo turbulence thiab luag uas tso cai rau tus shark ua luam dej sai dua thiab covertly.
Dab tsi yog rau dab tsi?
Shark daim tawv nqaij yog npog los ntawm cov nplai me me V-shaped, hu ua dermal denticles, uas zoo li cov hniav ntau dua li cov nplai ntses. Cov denticles no txo qis thiab turbulence, cia tus shark ua luam dej sai dua thiab ntsiag to.
Dab tsi yog qhov ua haujlwm ntawm daim tawv nqaij?
Raws li tus shark loj hlob, nws tsuas yog loj hlob ntau placoid nplai. Cov nplai no kuj pab cov shark ua luam dej sai dua vim tias lawv cov duab streamlined pab txo qhov kev sib txhuam ntawm cov dej ntws raws tus shark lub cev, los ntawm kev xa nws los ntawm grooves. Tsis tas li ntawd, tus shark daim tawv nqaij yog roughly sib cuag nrog nws tuaj yeem raug mob
Ntawm tus tsiaj twg koj yuav pom Denticle?
Ib lub denticle yog cov hniav me me zoo li cov hniav zoo li cov hniav. "Denticle" tej zaum yuav xa mus rau: Denticle (tus hniav feature), serrations ntawm lub cov hniav ntawm dinosaurs, lizards, sharks, thiab tsiaj. Dermal denticles los yog placoid nplai, hauv cov ntses cartilaginous.
Denticle ntawm ib npib yog dab tsi?
Raws li txhua lub ntsiab lus ntawm lo lus uas kuv tau pom, denticles yog tus qauv zoo li hniav qee zaum pom nyob ib puag ncig ib puag ncigTab sis qee lub npib muaj cov qauv tsim zoo sib xws uas Lub voj voog ib puag ncig uas tsis yog cov hniav - lossis pom zoo li, piv txwv li cov teev nyob ib puag ncig, xws li yog nyob rau hauv cov nyiaj Canadian nyiaj.
