A mercurymanometer could cause a pollution hazard.
水银压力表可能产生污染破坏。
2
Consists of gas tube, manometer, volume controller, clamp and scale. No danger of pollution without mercury.
由气柱玻管、压力表、定容机构、固定架和体积标尺组成。本仪器不使用水银，消除了污染。
3
An instrument used to measure pressure. A manometer consists of a U-shaped tube partially filled with a liquid that can vary in specific gravity from 1.0 (water) to 13.57 (mercury).