A solid state laser operated at lower-order mixed mode possesses both advantages of high output power and good beam quality.
当固体激光器运转在低阶混合模时，既可得到较高的功率输出，又可保证较好的光束质量。
2
An accurate account of the contact problem of an elastic indenter and a laminated beam is given by using the mixed finite element method for solving elastic contact problems.
本文采用处理弹性接触问题的有限元混合法研究了弹性压头与复合材料层合梁间的弹性接触问题。
3
By using a fixed point theorem of mixed monotone operators in cone, this paper studied a fourth-order nonlinear singular boundary value problem, namely a class of elastic beam equation.