deep pumping with small pump
deep pumping with small pump
用小泵深抽
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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In accordance with this problem, a new pump of small diameter with double barrel has been developed. Experimental study of the deep pumping process has been conducted and attained a success.
针对这一问题，研究设计新型双筒式小直径抽油泵，进行了深抽采油工艺技术的试验研究，获得了成功，取得了良好的经济及社会效益。
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