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Hexagon bolts muaj peb qib
Qhov tseeb, hexagon bolts muaj peb qib: A, B thiab C, nrog rau qhov sib txawv hauv qab no.Hexagon bolts tau muab faib ua peb qib: qib A, qib B thiab qib C. Bolt kev twb kev txuas tuaj yeem muab faib ua cov ntsia liaj qhov rooj zoo tib yam thiab kev sib txuas ntawm cov ntsia hlau muaj zog.Ordinary bolts tuaj yeem faib ua gr ...Nyeem ntxiv
