- hydrometer of variable immersion
- 变: become different; change
- 浮: float; drift
- 比重计: areometer; gravitometer; hyd ...
- 定浮比重计: hydrometer of constant immersion
- 比重计: api; a.p.i. (american petroleum institute) hydrometer; alcoholometer; araeometer; areometer; areometre; densimeter; densimetre; densitometre; density gauge; density meter; density sensor; gravitometer; gravity meter; gravity tube; gravitymeters; higrometr; hydro meter; hydrometers; hydrometre; picnometer; pycnometer; pyconmeter; pygriometer; pyknometer; specific gravimeter; specific gravity bottle; specific weight meter; stereometer; vinometer
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