A.圓螺母 B.緊定螺釘 C.彈性擋圈
A.1.1 B.1.3 C.1.5 D.1.7
A.當(dāng)量摩擦系數(shù)越大,自鎖性能越好; B.當(dāng)量摩擦系數(shù)越小,自鎖性能越差; C.當(dāng)量摩擦系數(shù)越大,自鎖性能越差