很多答案都不准确，为此他感到很烦恼。He was disturbed by the inaccuracy of the answers.这个被用来掩盖他们思想的混乱和不准确。This served to hide the confusion and imprecision in their thinking.他说这些数字都是捏造的，完全不准确。He said these figures were bogus and totally in...
A method for determining the hexagonal polytypes of silicon carbide using the Laue pattern is described.本文提出了用X射线 劳埃法鉴定SiC六方多型体类型的方法.For the materials with high hardness, such as cemented carbide, glass , jadeware, etc.适...