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这是起重机配件液压齿轮泵。
This is a gear pump hydraulic crane parts.
youdao
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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
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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