EN ISO 5167-4:2003
用插入圆截面管道中的压差装置测量流体流量.第4部分:文杜利管 ISO 5167-4-2003;代替EN ISO 5167-1-1995
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 4: Venturi tubes (ISO 5167-4:2003)