Objective: Type-2 diabetes is a progressive disease.
目标：2型糖尿病是一种进展性的疾病。
2
Progressive degree of progressive tax rate depends on the type of Social welfare function and labour supply elasticity.
累进税率的累进程度取决于社会福利函数的类型和劳动供给弹性的大小。
3
Feeding type, structure, applicable range and feeding accuracy of multi-station progressive die have been introduced with description of relationship between selection principle and die design.