Cov pob yog qhov tseem ceeb attribute, yam uas yog yog ib qhov nyuaj rau xav txog tej yam feem ntau ntawm niaj hnub kev ua si kev ua si. Yog li rau ib yam ntawm cov txheej xwm zoo li txawv nyob rau hauv loj, khoom, manufacturing, tsim thiab txawm daim ntawv. Txawm nws yog, lub feem ntau lug siv niaj hnub no yog precisely tawv npas.
football
Cov feem nrov nyob rau hauv lub ntiaj teb no kev ua si nawv, tsis muaj tsis ntseeg, yog football. Tom qab lub chamber tau yees ua los ntawm roj hmab, nws pib tuaj nrog sib txawv week. Lub sij hawm tau qhia tias daim tawv nqaij kuj yog ib qho ntawm qhov zoo tshaj plaws cov ntaub ntawv. Tawv ncaws pob pob, los yog es nws hau muaj ib tug ntoo khaub lig-txuas Mezhuyev lobules. Nyob rau tus qauv ntawm lub projectile, tej zaum yuav muaj 18, 24 los yog 32. Muab lub fact tias lawv yog raug rau siab heev txhawj xeeb thaum lub sij hawm ua si, rau zus tau tej cov kheev siv elastic tuab daim tawv nqaij (tej zaum ncav us txog) uas nws thickness yog hais txog 3.7 hli. Tej zaum ib tug log glued hauv ob sab phlu ntawm textile, uas tso cai rau koj kom nws los ntawm kev ncab. Ib tug ob peb xyoo dhau los, nyob rau hauv football ntais ntawv ntawm txhua theem siv tawv khoom uas coj lub koob yees duab nrog lub raj. Wedges nyob rau hauv lawv cov hnab ntawv yog longitudinal, thiab ib tug ntawm lawv muab rau cov incision los ntawm kev uas cov koob yees duab thiab tso. Lub qhov kaw vim lub txiav.
basketball
Tawv basketballs tiv thaiv ib tug tom qab ntawm tus neeg zoo li uas yog siv rau lwm yam kev ua si, feem ntau txawv loj thiab nyhav. Cov kab uas hla ntawm txhua tus ntawm lawv yog hais txog 25 cm, qhov hnyav - yuav luag 650 grams. Tag nrho cov feem ntawm tej khoom txiav los ntawm cov dub & daj cheeb tsam, uas muaj ib tug zoo-trimmed bahtarmu. Tsis tas li ntawd daim tawv nqaij rau kev tsim log tsheb tej zaum yuav siv tau raws li roj hmab los yog polyvinyl tshuaj dawb. Nyob rau hauv cov ob tus neeg, qhov chaw no feem ntau yog embossed thawj duab, uas yog npaj rau kho kom zoo nkauj.
lwm yam kev ua si
Rau ntaus pob siv tawv khoom muaj ceeb thawj, ob zaug tsawg tshaj li nyob rau hauv football. Nyob rau hauv cov ntaub ntawv ntawm cov nyias cov ntaub ntawv uas zoo li yog siv, nyob rau hauv feem ntau muaj ib tug khoom xim lub teeb. Cov koob yees duab tau tuaj ib tug roj hmab txiv mis.
Balls rau no hom ntawm kev ua si nawv zoo li cov dej polo, raws li ib tug txoj cai, yog sewn zoo xws li cov football. Ntxiv mus, lawv muaj tib qhov loj me. Qhov txawv tsuas yog ib tug roj hmab log. Nws siv yog txuam nrog rau cov tej yam kev mob ntawm qhov kev ua si, tom qab soaking ntawm daim tawv nqaij ua rau nws weighting.
Handball khoom, txawm nws kuj loj me me, sib txawv thiab nyhav txog 500 grams, uas yog ntau tshaj li qhov football projectile. Lub hau nyob rau hauv cov ntaub ntawv no muaj slices nyob rau hauv ib tug npaum li ntawm los ntawm kaum ob los kaum yim. Txhua yam uas lawv yuav muaj ib tug txawv hom ntawm txiav. Tawv khoom rugby yog txawv los ntawm tag nrho cov ntau ntau yam nrog nws txawv lub voj qe. Lawv tus qauv ntev yog teem rau ntawm 29 centimeters, thiab txoj kab uas hla ntawm lub hauv paus ib feem - 21 centimeters. Khoom hnyav yog 450 grams. Lub plhaub ntawm sewn tsis heev tuab daim tawv nqaij thiab muaj peev xwm muaj xws li yim, rau los yog plaub lobes.