Most efficient way of lockingContact Numbers of your phone.
锁定你的手机联系号码的最有效方法。
2
Because of its unique locking taper contact, it is able to reach the best status fixed.
由于它独特的圆锥面接触锁紧使其达到安装固定的最佳状态。
3
By using the finite element method, the dynamic stress caused by vertical contact impact between bolt locking surface and barrel extension locking surface of a new rifle was studied.