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| 21. | float barograph |
| 浮子气压记录仪 |
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| 22. | float viscometer |
| 浮子粘度计 |
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| 23. | float-actuated valve |
| 浮子阀 |
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| 24. | float water level indicator |
| 浮子水位指示器 |
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| 25. | floating plunger positioner |
| 浮子定位器 |
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| 26. | concentric float |
| 同心式浮子 |
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| 27. | single float viscometer |
| 单浮子粘度计 |
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| 28. | float line roller |
| 浮子绳滚筒 |
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| 29. | low pressure float valve |
| 低压浮子阀 |
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| 30. | tape-float liquid-level gauge |
| 带－浮子液位计 |
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