The express-analysis methods used in some foreign countries to determine ash content of coal ingoing to thermal power plants before unloading from wagons are presented, and a review thereof is given.

介绍国外火电厂入厂煤灰分在卸车前的快速检测方法，包括天然放射性法、载煤车厢称重法、辐射源照射法等，并对其作了评述。

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This includes identifying conceptual Analysis Elements necessary to express the behavior of each use case.

此活动包括识别必要的概念分析元素，以表示每个用例的行为。

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However, different participants in the requirements-analysis-design cycle express rules with varying degrees of formalization and structure.

但是，需求-分析-设计周期中的不同参与者是以不同程度的规范化和结构来表达规则的。

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