Balanced compound gear pump is a new king of hydraulic pump which combines ring gear with external gear pump.

复合式平衡齿轮泵是将内外齿轮泵融为一体的新型液压泵。

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Balanced compound gear pump is a new king of hydraulic pump which combines ring gear with external gear pump.

复合式平衡齿轮泵是将内外齿轮泵融为一体的新型液压泵。

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