之前，我们已经描述过刀具失效的类型和原理了。
The types and mechanisms of tool failure have been previously described.
剥离是车轮踏面失效的主要类型。
这种类型的滚珠轴承因为这些油泥造成使用失效是很典型的。
The typical instrument ball bearing failure is characterized by the presence of such sludge.
擦伤、冷焊和粘着摩损是粘扣失效的三种类型。
The scratch, cold welding and abrasion are three kind of thread failure.
石油钻铤螺纹联接失效是钻具失效的主要类型。
The failure of collar connection thread is one of the prime drill tool failures.
剥离是车轮踏面失效的主要类型。
剥离是车轮踏面失效的主要类型。
应用推荐