A.圓螺母 B.緊定螺釘 C.彈性擋圈
A.當(dāng)量摩擦因數(shù)越小,自鎖性能越好 B.當(dāng)量摩擦因數(shù)越小,自鎖性能越差 C.當(dāng)量摩擦因數(shù)越大,自鎖性能越差 D.當(dāng)量摩擦因數(shù)越大,自鎖性能越好