就地压力计显示出当前相对于整个单位而言的工作压力。
The PG's gauge display indicates the current operating pressure relative to the overall range of the unit.
测量压力所用的一种仪器，压力计由部分装有相对密度在1.0(水)至13.57(汞)范围内的液体的U形管组成。
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).
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