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手钻-三脚架钻井机

10 bytes added, 09:35, 20 October 2015

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===鸣谢===

* 本页的材料源于即将在[http://www.practicafoundation.nl/ Practica Foundation]发表的初步研究以及网站以及[http://www.rural-water-supply.net/ Rural Water Supply Network]中发表的初步研究,尤其是其中的[http://www.rural-water-supply.net/en/implementation/manual-drilling 人工钻井部分].

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Weichen Chen

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