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When you go to bed and when you get up are keystones to restful , refreshing sleep .

何时睡觉和何时起床是获得使人休息充分、精神焕发的睡眠的关键。

In this paper , it has modified the np problems ( course arrangement ) with ga , and explained the keystones , ideology , techniques difficult , solving scheme of system design .

本文用遗传算法对排课系统的np完全问题进行一定的优化，重点的说明了系统设计的重点、设计思想、难点技术和解决方案。

The keystones and components of pcr and its applications in the study of insect resistance , environmental toxicology of pesticide , mechanism of pesticide and the exploitation of bio-pesticides are introduced in this paper .

本文简要介绍pcr技术的基本原理和特点,以及其在靶标生物抗药性研究、农药环境毒理、农药作用机理、生物农药的开发等方面的应用。

On the realistic keystones to effectively respond to the international financial crisis .

我国有效应对国际金融危机的现实看力点。

Ahimsa , " non-injury " or the absence of the desire to harm , is regarded by indian thinkers as one of the keystones of their ethics .

非暴力，“不伤害”或者是没有伤害的欲望，被印度思想家认为是他们道德规范的其中一个基石。