In this paper, its designing parameters, structural features, industrial tests and application results are presented.
本文着重介绍了该钻头的设计参数、结构特点以及工业性试验和使用效果。
In this paper, its designing parameters, structural features, industrial tests and application results are presented.
本文着重介绍了该钻头的设计参数、结构特点以及工业性试验和使用效果。
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