4 Tswv yim tswv yim rau xaiv cov log tsheb muaj

1. Tus naj npawb ntawm cov log tsheb txheej. Muaj 4 qhov sib xyaw ua ke. Qhov loj ntawm cov lej ntawm cov lej, lub log tsheb zoo dua.
2. Yog tias cov lej zoo ib yam, sib piv cov ntaub ntawv. Cov khoom siv log tsheb feem ntau yog nylon, polyester, polyamide, thiab steel hlau txheej cov ntaub ntawv.
3. Tus naj npawb ntawm cov phab ntsa txiav txim siab qhov toughness ntawm lub log tsheb, uas yog, nws tsis yooj yim ua rau lub log tsheb bulge los yog tawg. 2 txheej yog qhov zoo tshaj plaws, thiab 1 txheej yog qhov zoo tib yam.
4. 3T yog hais txog qhov hnav qhov Performance index, tuav qib, thiab kub coefficient. Peb cov coefficients no tau sau ua ke hu ua 3T coefficient. Ntawm lawv, qhov loj dua qhov hnav coefficient index tus nqi nyob rau hauv tib lub hom, ntau hnav-resistant nws txhais tau tias. Kev coj tus coefficients ntawm cov hom sib txawv tsis sib piv, vim tias qhov kev ntsuam xyuas qhov tseem ceeb ntawm cov khoom sib txawv yog txawv.