existent 专八

1.The text introduced work principle and existent disadvantage particular for traditional tepefaction regeneration adsorption type compress air decontamination system.

详细介绍了传统的微热再生吸附式压缩空系统的工作原理及存在的缺点。

2.By using Taylor's formula, the article deduces the sufficient condition of the existent extreme value and the necessary condition of the inexistent extreme value of trinary function.

通过利用泰勒公式推导出判断三元函数极值存在的充分条件和极值不存在的必要条件。