Some problems and deviation often appeared in course of sampling and preparation of commercial coal are discussed in this paper, and consequently the feasible solutions are presented.

通过长期煤炭采制样过程的实践，对经常出现的几种差异问题加以分析探讨，提出了可操作的解决方法。

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Some problems and deviation often appeared in course of sampling and preparation of commercial coal are discussed in this paper, and consequently the feasible solutions are presented.

通过长期煤炭采制样过程的实践，对经常出现的几种差异问题加以分析探讨，提出了可操作的解决方法。

youdao