Combining practice engineering, author discusses the construction method and the technique measure of peg to drill hole and to press mortar.

本文作者结合工程实际，论述了钻孔压浆桩的施工方法及技术措施。

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The paper uses the method of value engineering project appraisement to compare corkscrew groove-wheel wheat precision drill and wheat pneumatic precision drill.

利用价值工程方案评价的方法，对螺旋槽轮式小麦精量播种机和气吸式小麦精量播种机进行方案评价比较。

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Application of diamond drill bits in masonry engineering home and abroad is presented.

本文介绍了金刚石钻头在国内外建筑工程中的应用情况。

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He pioneered the oil trade with Russia, bartering drill pipe, petrochemicals and engineering services to the Soviet Union in exchange for crude.

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