8.1 气压8.1.1 气压的概念(conception of air pressure)气压是指大气压强,通常是指观测高度到大气上界单位面积上垂直空气柱的重量。测量气压的仪器通常有水银
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他们可能意识到声音是通过空气传播的波，并可能有声音传播时空气压缩的概念。
They probably realized that sound was a wave propagating through the air and may have had a notion of the compressibility of air during sound propagation.
在假设存在“压力零点温度”的概念基础上，运用对比态的方法，本文提出了一个新的饱和蒸气压方程。
Under the assumptation that the "Pressure Zero Temperature Point" exists, with the corresponding state method, a new vapor pressure equation was established in this thesis.
旋转流形上的RM系列通过采用固定端口一个独特的空气压力的概念转移到旋转平台的旋转部件上。
The rm Series rotary Manifold utilizes a unique concept in transferring air pressure thru fixed ports to rotating parts on the rotary platform.
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