标准摘要
[中文适用范围]： 适用于直径为 2 毫米及以上的表面和次表面材料。 适用两种采样技术：一种是收集可定义的原位材料体积，随后将其作为散装样品进行处理，第二种是使用多种程序之一从表面对材料进行采样。 [外文原描述]： Applies to surface and subsurface material having diameters of 2 mm and over. Two sampling techniques are applicable: one is to collect a definable in situ volume of material which is subsequently dealt with as a bulk sample, the second is to sample material from the surface, using one of several procedures.
英文名称Liquid flow measurement in open channels — Sampling and analysis of gravel-bed material