Scientists began systematically separating elements from each other in the 1600's and a tradition was started that whoever discovered an element got to name it.
从17世纪开始科学家们系统地将元素分离，由此开创了谁发现谁就命名该元素的传统。
2
In this paper we use boundary element method to separating main stress. It can simplify the problem and provide a practical method for separating main stress.
本文将边界元法引入光弹性应力分析使主应力分离问题得到简化，从而使光弹性应力分析方法更简便可行。
3
The roll separating force, rolling torque and contact pressure along the surface of the rolls are also evaluated by means of the finite element method.