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钻进过程中,钻头是直接破碎岩石的工具.因次,钻进效率在很大程度上取决于钻头的性能.以下介绍几种新型钻头.
Drilling is a tool that directly breaks rock during drilling, which, to a great extent, depends on the performance of the drill bit. Here are a few new types of drill bits.