orifice choke meaning in English

孔口节流器

Abstract : various measurement methods of the capacity of gas discharge forpiston type compressor are analized and compared . the orifice choke device that is suitable for measurement in site is recommended emphatically . in combination with the example of measurement in site , the matters needing attention of measurement in site on the capacity of gas discharge for compressor are point out
文摘:对活塞式压缩机排气量的各种测量方法进行了分析比较，着重介绍了比较适合于现场测量的孔板节流装置，并结合现场测量实例指出了压缩机排气量现场测量应注意的问题。