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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。
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。
The theoretical calculation value of some common transition fit is compared with practical statistical value, which is of practically reference to the accuracy selection in mechanical design.
并对几种常用过渡配合的理论计算值及实际统计值作比较，这对于机械设计中的精度选择有实际参考意义。
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