用辐射透射法测量水 沉积物混合物的密度

[中文适用范围]： 本文件规定了测量河流、运河、港池、水坝和水库等水体中悬浮或沉积的水-沉积物混合物密度的辐射透射法。该方法基于 X 或伽马射线的透射原理。本文件简要描述了该方法的工作原理以及所使用的一些仪器的详细信息。本文件适用于使用辐射透射法（特别是伽马和 X 射线透射法）测量水体中的水-沉积物混合物密度。本文件详细介绍了工作原理、应用、优势和相关仪器。 [外文原描述]： This document specifies the radiation transmission method for measurement of density of the water-sediment mixture, suspended or deposited, in water bodies such as streams, canals, harbour basins, dams and reservoirs. The method is based on principles of transmission of X or Gamma rays. This document covers brief description of the operating principle of the method and details of some of the instruments used. This document applies to the measurement of water-sediment mixture density in water bodies using radiation transmission method, particularly gamma and X-ray transmission method. The working principles, applications, advantages and associated instruments are elaborated in this document.