Kom Paub Txog Fastener Basics Thiab Nws Classcifications
1.Qhov fastener yog dab tsi? Fasteners yog ib chav kawm ntawm cov khoom siv tshuab dav siv rau kev sib txuas ceev. Muaj ntau yam fasteners tuaj yeem pom ntawm ntau yam tshuab, khoom siv, tsheb, nkoj, kev tsheb nqaj hlau, txuas hniav, tsev, cov qauv, cov cuab yeej, cov cuab yeej, ins ...
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