标 准 编 号:BS EN ISO 5167-4-2003 简体中文标题:用插入圆截面管道中的压差装置测量流体流量.文杜利管 繁体中文标题:用插入圆截面管道中的压差装置测量流体流量.文杜利管 English Name:Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Venturi tubes