DIN EN ISO 5167-3-2004
用插入圆截面管道中的压差装置测量流体流量.第3部分:喷嘴和文杜利喷嘴
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 3: Nozzles and Venturi nozzles (ISO 5167-3:2003); German version EN ISO 5167-3:2003