A type of valve, typically found on small-diameter pipework, that incorporates an orifice or flow-restriction device to control fluid flow.
一般用于小直径管道系统的一种阀。它包括一个用于控制流体流动的孔板或限流装置。
2
The main sources of the orifice flowrate' uncertainty were discussed, and then the theory basis for the precision control was provided.
探讨了孔口流量计流量不确定度的主要来源，为精度控制提供了理论依据。
3
Constant orifice differential pressure is the premise for high accuracy hydraulic measuring, so thorough analyse of orifice differential pressure control technology has been taken.