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| 21. | float type pressure gauge |
| 浮子式压力计 |
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| 22. | float needle valve |
| 浮针阀 |
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| 23. | float zone growth |
| 浮区生长 |
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| 24. | float oil layer sampler |
| 浮油层采样器 |
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| 25. | float-type compass |
| 浮子式罗盘 |
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| 26. | ball float shoe |
| 球形浮鞋 |
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| 27. | casing float valve |
| 套管浮阀 |
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| 28. | limited end float coupling |
| 限流浮箍 |
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| 29. | water float cock |
| 浮球旋塞 |
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| 30. | float type level gauge |
| 浮子式液位计 |
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