Some domestic textbooks only give proofs under special condition of rack cutters and proofs under general condition of gear cutter are not strict enough.
国内文献及有关书籍中有的只对齿条刀具切制这一特殊情况进行了证明，而用齿轮刀具切制的普遍情况的证明是不严密的。
Through analyzing two examples of seeking derivative, new theorem and deduction for solution to some functions derivation under the special condition are concluded, and examples are shown.
通过对两个求导例题的分析，归纳出求函数在某些特殊点导数的新的解法定理及推论，并举例说明它们的应用，最后对此求导方法进行总结。
This enhancement of scattered em waves under special condition of higher frequencies of special zones may be explained by using the influence of the irregular structure of some size in the ionosphere.
本文还对超高频波段在一些特定区产生的散射增强，用电离层中某些尺寸的不均匀结构的影响给予初步解释。
So it indicates that the surface with this kind of concave can reduce friction under the condition of plane-plane contact, and if the concave on the surface has some special depth t...
从而得到结论，在平面-平面接触，乏油状态下，该种表面凹坑有一定减阻作用，且在某一深度的凹坑减阻效果最好。
So it indicates that the surface with this kind of concave can reduce friction under the condition of plane-plane contact, and if the concave on the surface has some special depth t...
从而得到结论，在平面-平面接触，乏油状态下，该种表面凹坑有一定减阻作用，且在某一深度的凹坑减阻效果最好。
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