On the basis of analyzing the chemical character of underground hot water, the formation mechanism of the chemical composition and its genesis are discussed in this paper.
该文在分析地下热水化学特征的基础上，对地下热水化学成分形成机理及地下热水成因进行探讨。
The article explains the prevention of gas disasters by analyzing the formation of coal-bed gas, its storage and movement and factors affecting them.
文章通过分析煤层瓦斯的形成、瓦斯在煤层中的储积与运移及影响瓦斯储积与运移的因素，阐述了瓦斯灾害的预防措施。
This text expresses the arts forms of German expressionism from four angles with view to analyzing and thinking of its formation.
本文从四个部分对德国表现主义的艺术形式进行深入的分析和思考。
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