对一种新型双作用抽油泵的结构、工作原理、技术特点进行了研制并进行了现场试验。
A new double action oil well pump, which has been progressed field experiment, is discussed on its structure, principle and characteristics here.
对一种新型双作用抽油泵的结构、工作原理、技术特点进行了研制并进行了现场试验。
A new double action oil well pump, which has been progressed field experiment, is discussed on its structure, principle and characteristics here.
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