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| 1. | 2、 外表采用机箱结构，压力传递采用杠杆踏板式弹簧加压结构，调节、作、修均方便。 |
| Of a box structure and a lever-petal type spring-pressuring structure used for pressure transmission, easy to be adjusted, operated and maintained. |
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| 2. | step regulating switch |
| 分级调节开关 |
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| 3. | hierarchical list |
| 分级表|分级编目 |
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| 4. | hierarchical sequential organization |
| 分级顺序结构;分级顺序组织 |
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| 5. | graduated rheostat |
| 分级变阻器,分级电阻箱 |
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| 6. | grading cylinder |
| 分级滚筒|分级圆筒筛 |
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| 7. | extraction fractionation |
| 提取分级（分离），萃取分级 |
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| 8. | stepped refining |
| 分段精炼|分级精炼|分级调质 |
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| 9. | hierarchical operating system |
| 分级操作系统|分级结构操作系统 |
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| 10. | size classification |
| 按大小分级|量径分级 |
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