- 推荐网络例句
-
In the oscillation theory of differential equations,it is very difficult to find anasymptotic classification of positive solutions and give conditions for the existenceof positive solutions.
在微分方程振动理论中,寻找方程正解的渐近分类并给出正解的存在性条件是一个相当困难的问题。
-
The method is presented for preparing aluminum chloride and water glass from kaolinite in coal measures.
本文讨论煤系高岭岩综合制取氯化铝和水玻璃的工艺路线及工艺条件。
-
It is the peculiarity of knowledge that those who really thirst for it always get it.
凡真正渴求知识的人,都能得到知识,这是知识的特性。