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Classification: 51450200 [AGU946002]
| Preferred name | 51-45-02 压力阀比例功能（液压） |
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| Definition | 阀门，当达到设定压力时，通过将流体排出或返回储液器来限制压力，其中的输出与控制输入值成正比 |
| IRDI | 0173-1#01-AGU946#002 |
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