double tube meaning in English
双层管
双路管
Examples
- Verification regulation of double tube mercury barometer
双管水银压力表检定规程 - Silver head ( with clock ) , double tubing with fittings bag
银色听头（带时钟） ,双管，配件包。 - Double tube mercury manometer
双管水银压力表 - Hung clamp for double tube
双管悬挂卡箍 - Double tube pressure gauge
双管压力计