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手钻-三脚架钻井机
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10:34, 19 October 2015
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===修建、运作和维护===
[[Image:Diagram of a vonder rig.jpg|thumb|right|200px|
Diagram of a vonder rig
三脚架钻井机的图示
.
Credit
图片来源
: WEDC.]]
三脚架钻井机使用三脚架和工作台,因此比传统的工具更贵,但同时也能保证垂直钻井。
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Weichen Chen
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