标准摘要
[中文适用范围]： 本文件描述了从初级增量组合到特定测试样品制备的煤炭样品制备过程。 [外文原描述]： This document describes the preparation of samples of coal from the combination of primary increments to the preparation of samples for specific tests.
英文名称Coal and coke — Mechanical sampling — Part 4: Preparation of test samples of coal