标准摘要
[中文适用范围]： 本文件规定了使用矩形和三角形（V型缺口）薄板堰测量自由流动条件下明渠清水流量的要求。 它包括全宽矩形薄板堰在淹没（淹没）流条件下的使用要求。 [外文原描述]： ISO 1438:2017 defines the requirements for the use of rectangular and triangular (V-notch) thin-plate weirs for the measurement of flow of clear water in open channels under free flow conditions. It includes the requirements for the use of full-width rectangular thin-plate weirs in submerged (drowned) flow conditions.
英文名称Hydrometry — Open channel flow measurement using thin-plate weirs