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冲击钻井

45 bytes added, 11:44, 23 September 2015

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====供应商====

* [https://en.eijkelkamp.com/ Eijkelkamp Agrisearch设备] - Drilling equipment and manuals on hand auger and percussion gouges.钻井设备、手钻与冲击圆凿指南。

* [http://www.vrm.nl/ Van Reekum Materials] - Drilling equipment, hand auger and percussion drilling.

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