laser detector diode 激光检波二极管 答：激光检波二极管（Laser Detector Diode） 大直径钻井（Large Diameter Drilling） 激光检波二极管 qne和qnh是什么英文词组的缩写，即 qne（标准气压高度）和qnhQNE - Query normal elevation QNH - Query norm...
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large diameter drilling machine [矿业] 大直径钻井机
large diameter drilling pile 大直径挖孔桩
large diameter drilling hollow pile 大直径钻孔空心桩
Large diameter long-hole drilling 大直径深孔凿岩
large diameter rotary drilling 大直径回转钻进
large diameter borehole drilling 大直径钻孔
The difference between large diameter drilling and oil drilling is reviewed with their characteristics.
论述了大直径钻井工程与石油钻井的不同特点。
The theoretical and technical problems to be researched for large diameter drilling are outlined with its application prospect appraised.
简述了大直径钻井需要研究的理论和技术问题，并对应用前景作了评价。
Based on the historical experience of drilling technology, it is proposed to study the bottom process of large diameter reverse circulation rotary drilling.
根据钻探技术的历史经验，建议应进行大直径反循环回转钻进井底过程的研究。
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