simplestadj.简单的；单纯的simpleadj.简单的；朴素的；单纯的；笨的Simple liquids简单液体simplex fabric辛普勒克斯经编织物simple cornice简单檐口simple average简单平均simple bearing简支simple feeling朴素的感情simple effects简单效应simple subject简单的问题simple process单级过程simple divisor单除子

1. A criterion theorem of having no finite coverings for a finitely generated module M over a semisimple ring R is given.
   对半单环上有限生成左模给出一个无有限覆盖的判定定理。
2. Numerical simulation shows that the two erbium-doped fiber ring lasers can be well synchronized if the strengths of delay feedback and injection are suitable.
   数值模拟表明，在合适的反馈和注入条件下，两个单环掺铒光纤激光器能够达到混沌同步。