必要条件

Obtain the necessary and sufficient conditions of ergodic and exponentially ergodic properties for the population process.

给出了人口过程遍历性与指数遍历性的充分必要条件。

Cultivating the emotion between students and teachers and the study interests of students is the important prerequisite,cultivating the habits of thinking in English is the essentia...

要实现师生之间的互动教学，培养师生的良好感情，激励学生的学习兴趣是重要前提；培养学生用英语思维习惯去学习是必要条件；采用有效的教学方式是根本保证。

Results are as following:The causes of grassland desertification of Hulunbeir are the outcome of interaction of nature and the human beings. Among these reasons, the loose soil texture, which was formed in the fluviolacustrine sediment during Quaternary, establish the physical ground, and the drought and wind is the natural force of grassland desertification. And then over-cutting forest, over-grazing grassland, imbalance of resource utilization and estrepement reduce the coverage of vegetation, therefore provide necessary conditions for the grassland desertification.

其中，形成于第四纪河湖相沉积沙的疏松土壤母质，为日后土壤风蚀奠定了深厚的物质基础；干旱多风的气候条件构成了草地风蚀沙化的自然营运力；而人为过度砍伐沙地林木资源、沙质草地长期超载放牧、资源利用不平衡以及乱垦、滥挖等不合理经济行为，又降低了沙化草地植被覆盖度，为草地风蚀沙化提供了必要条件。

By the management conceptions of the power company have been upgraded, the line-loss rate of the power network of China will be advanced in the world with adopting modern management method, giving up extensive management, making better use of quantitative, operable and examinable scientific management methods, reducing the irrational line-loss to the least as it can be.

随着电力企业经营理念的更新，不断掌握现代化管理手段，摒弃粗放管理，更好地应用定量的、可操作的、可考核的科学管理方法，把不合理电能损耗减小到最少，使线损率达到先进水平，这是电力企业现代化管理的核心内容之一，也是电力企业生存和发展的必要条件。

Its well-balanced and high efficiency run is one of the necessary conditions of the high quality and high field for the middle plate product line .The nip-deliver roller system is the hard core in the armor plate side exscind system, so its reliability and veracity is very impotent.

它的正常高效运行是中板生产线优质高产的必要条件之一，在中板生产中扮演着很重要的角色，而夹送辊控制系统是整个系统的核心部分，因此对夹送辊控制系统的工作可靠性、准确性提出了很高的要求。

The aggregate of cytoplasmic or extranuclear genetic material in an organism .

数学是一个有机体，它的生命力的一个必要条件是所有各部分的不可分离的结合。

How to go SEO is crucial, want to had chosen the key word that you mean before making a station, the domain name that general rubbish stands should agree with the theme or close, such domain name to SEO it is a requirement, here cites a case, oneself way station was to choose the theme that this key word regards filar socks belle as my website!

如何去SEO就是关键，在做站之前要选择好你想要的关键字，一般垃圾站的域名要和主题一致或者相近，这样的域名对于SEO是个必要条件，这里举个例子，本人的一个小站是选取了丝袜美女这个关键字作为我网站的主题！

It's no the memory but the forgetness that comprises one of the necessary living condition we are relying on.

不是记忆力，恰恰相反，是遗忘构成了我们赖以生存的必要条件之一。

China is one of the fastest-growing markets in the world and we are committed to helping our global end users and OEM customers meet the legal requirements necessary for them to be successful, said Richard Galera, marketing manager, safety components.

中国是世界上发展最快的市场之一，我们承诺帮助我们的全球终端用户和OEM用户满足他们成功所必须的法律必要条件。罗克韦尔自动化安全部件营销经理Richard Galera如此表示。

In recent years,the microlaryngoscopic technique had created essential conditions to early diagnosis and minimally invasive treatment for early glottic cancer and vocal cord dysplasia.

近来喉显微技术的应用，为声带恶性肿瘤及癌前病变的早期诊断和微创伤治疗，创造了必要条件。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。