直齿共轭内啮合齿轮泵是一种新型低噪声液压元件。

Straight conjugate internal gear pump is a new kind of hydraulic component with low noise.

youdao

直齿共轭内啮合齿轮泵是一种新型低噪声液压元件。

Straight conjugate internal gear pump is a new kind of hydraulic component with low noise.

youdao