In recent years, percussion rotation drilling technique in geological departments of Ministry of Metalurgical Industry has gained a reapid development.
近年来，冶金地质系统的冲击回转钻进技术取得了较好的效果。
Look, there is actually no publisher AD system in this industry. The publisher AD system is very simple: put this impression at this time. It's just the rotation process.
其实严格来说，这个行业里并不存在媒体广告系统，媒体广告系统其实很简单：在特定的时间曝光指定的广告，就是个轮播过程。
It points out its advantages and future application of the new gear in the low rotation and heavy load in the metallurgical industry.
指出新型齿轮在冶金行业低速、重载工况条件下的优越性和使用前景。
It points out its advantages and future application of the new gear in the low rotation and heavy load in the metallurgical industry.
指出新型齿轮在冶金行业低速、重载工况条件下的优越性和使用前景。
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