Magnesium phthalate dihydrate was synthesized by rheological phase reaction.用流变相反应法合成了二水邻苯二甲酸镁.The crystallization course of dihydrate calcium sulphate affected by APA was also researched.另外还研究了添加不同类型的活化疏松剂对二水硫酸钙结晶过程的影响....
The program introduced in this paper is compiled in Foxbase with simple and useful character.该文系统的程序用Foxbase编写,简单实用,可自动生成和修改单层或多层表格.Through database language'Foxbase', the computer management system for list of...
This will achieve greater security without unduly burdening the consumers or the economy...此举可提高安全性，而不会给消费者和经济增加过多的负担。The procedures of the assessing ought to be active, easy and practicable avoiding burdening students.评...