节流孔 meaning in English

restriction
throttling orifice

Non - plugging bonnet and throttle orifice
无堵塞阀帽和节流孔。
Numerical simulation of a boiler primary - air flow through a throttle orifice - plate
锅炉一次风通过节流孔板时的数值模拟
Rdo retard delay orifice
减速延迟节流孔
The high ratio of diaphragm to orifice provides excellent performance and stability at low reduced pressure
在低减压情况下，隔膜到节流孔的高控制比具有卓越的性能和稳定性。
Measurement of fluid flow by means of pressure differential devices inserted in circular cross - section conduits running full - orifice plates
用插入圆截面管道中的压差装置测量流体流量.节流孔板

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