当原料气流过节流件时，产生焦耳-汤姆逊膨胀及降温，使部分气体和大部分水蒸汽液化。

As the feed stream flows through the choke, the resulting J-T expansion and cooling causes some gas and most of the water vapor to liquefy.

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橡胶杯膜电远传流量计，是配合节流元件（孔板）用来检测液体，气体和蒸汽的流量，并能自动显示和累积的仪表。

This flowmeter is a meter with automatic display and accumulation used for examining and measuring the flow of liquids, gases and steam with the aid of a throttle.

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对管流、嘴流、渗流的协调计算及蒸汽流过节流喷嘴的临界流动特性进行了研究。

Coordination calculation for the flow in pipe, nozzle and reservoir, critical flow characteristics through the throttling jet are studied.

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