The results showed that during drawing wire the cleavagecrack of diamond in crystal face(111)is the main reason.
拉丝过程中金刚石模子的失效是由金刚石沿（111）面解理引起的。
2
Its explicitly explained how the cleavage step pattern is formed by the cleavagecrack intersecting with screw dislocation.
本文对解理台阶的形成模型——解理裂纹与螺位错交割模型进行了诠释。
3
In low temperature cleavage physical model, it is of Paramount importance to ascertain the nature of the critical event in the formation of a cleavagecrack.