existent 专八

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

详细介绍了传统微热再生吸附式压缩空气净化系统工作原理及缺点。

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.

通过利公式推导出判断三元函数极值充分条件和极值不必要条件。