【化】 picknometer; picknometer,pycnometer; picnometer
【醫(yī)】 picnometer

1.pycnometer  

比重的英語翻譯：

proportion; specific gravity
【化】 specific gravity; specific weight
【醫(yī)】 sp. gr.; specific gravity; specific weight

管的英語翻譯：

canal; duct; fistula; guarantee; meatus; pipe; tube; wind instrument
【化】 pipe; tube
【醫(yī)】 canal; canales; canalis; channel; duct; ductus; salpingo-; salpinx
syringo-; tuba; tube; tubi; tubing; tubo-; tubus; vas; vaso-; vessel