A composition with some practical value was put forward. And properties of protecting metal penetration by the coating were also dealt with in the article.

提出了具有一定的实用价值的配方，对涂料防止粘砂的特性进行了论述。

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Therefore, carrying out deeply some problems of the relationship of the solar collector with absorption refrigeration system, which can bring both theoretical and important works of practical value.

因此，针对太阳能吸收式制冷装置集热系统与制冷机的有效配用题目开展一些深进的探讨，既有理论价值，又有重要的工程实用价值。

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With some practical examples, this paper presents a general method to determine the extreme value of ideal gas temperature in arbitrarily process.

文章给出了求解理想气体任意过程温度最值的一种普遍方法，并且举例加以说明。

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