- [化学] differential liquid level gauge
- 水位: stage; water level
- 差: send on an errand; dispatch
- 流速计: hydrodynamometer; rhysimeter ...
- 水位差: head of water; water head; waterhead
- 流速计: anemometer; current meter; flow gage; flow indicator; flow meter; flow rate meter; flowmeter; hydro dynamometer; hydrodynamometer; hydrodynamometre; hydrometer; kinemometer; kinemometet; pitometer; reometer; rheometer; rhysimeter; stream measurer; tacheometer; tachometer
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