不可缺少的

With authorised promulgation of V-Ray for Amerind in August 2009 V-Ray performance solutions addicted their ikon of vital agency that is ever there support artists alter modify the most enterprising fictive visions into actuality for both inferior instance and modify outlay without sacrificing quality.

Vray Maya在2009年8月Vray渲染解决方案，确认了他们不可缺少的工具，就是始终有帮助艺术家转化为更少的时间和更低的成本，即使是最雄心勃勃的梦想变为现实的创造性不牺牲质量的图像。

Controlled synthesis of carbon nanotubes and assembling them into macroscopic structures are of great importance to the applications of carbon nanotubes, and a deep understanding of the growth mechanism of carbon nanotubes would be an indispensable prerequisite for well-defined synthesis in a controllable way.

碳纳米管的可控制生长，及其宏观尺度结构的制备，对于碳纳米管的应用具有重要的意义，为了实现准确的生长控制，对碳纳米管生长机理的深入了解是不可缺少的前提条件。

Elaborates the relationship between the modeling and landscape of city slicker good over-bridge modelling,the esthetics element and the cognition of people for the city slicker good over-bridge modelling design.

人行天桥是道路建设中不可缺少的重要建筑之一，城市人行天桥的美学造型也一直是城市建设非常关注的问题，过去，大部分天桥过于注意实用性，而忽略了外形的设计，以往的人行天桥主要强调满足使用功能，对自身的美化和与周围环境的和谐较少考虑。

in computer and other communication networks, the reliability of the information and the integrity of the information is an important communications security issues, particularly in unsafe channel communications, verification of the message is indispensable, there are many ways to solve these problems, this paper provides a method of message authentication.

在计算机及其他通信网络中，对消息的可靠性及完整性的验证是通信安全的重要问题，特别是在不安全的信道通信时，对消息的验证更是不可缺少的，解决此类问题的方法有很多，本文提出了一种消息认证的方案。

B D#?$X v-obC0 It is of significance to study the CO2 degasification on the discordogenic fault. It is indispensable to calculating the earth's carbon content. It is also indispensable to making clear the geochemical circulation of carbon, the karst dynamic system of the carbon and the reasons of CO2 content growth in atmosphere and recent intercurrent disasters.

深大断裂的CO2释放作用研究是一项非常重要和有意义的工作，它对于确定地球的含碳量，弄清岩溶动力系统、碳的全球地球化学循环过程，大气中CO2含量增加的原因以及近年来多种并发性灾害的成因都是不可缺少的方面。

Electronic authentication means a service that is based on encryption technology, electronic signature, digital certificate, digital digest and so on, which are to be used to identify the signatory and the credibility and integrity of the document.

从字面上理解，凡是能颁发认证证书的机构都可以称之为认证机构。但本文的认证机构具有特定的含义，它专指电子商务中对用户的电子签名颁发数字证书的机构，它已经成为开放性电子商务活动中不可缺少的信用服务机构。

Since the eighties of the 20th century from nowdays, The Chinese environmental education has qualitative leaps. Especially in recent years, with the issue of "the Implement enchiridion on environmental education of middle and primary schools". It is indicate there are ones own first national-level environment educational guidance files in China, it becomes the indispensable important component in the regular educational field.

从20世纪80年代发展至今，中国的环境教育有了质的飞跃，特别是近几年，随着《中小学环境教育实施指南》的出台，标志着中国有了自己的第一份国家级环境教育指导性文件；标志着环境教育成为了正规教育领域中不可缺少的重要组成部分，是基础教育课程改革的有机体。

I had another Belt not so broad, and fasten'd in the same Manner, which hung over my Shoulder; and at the End of it, under my left Arm, hung two Pouches, both made of Goat's-Skin too; in one of which hung my Powder, in the other my Shot: At my Back I carry'd my Basket, on my Shoulder my Gun, and over my Head a great clumsy ugly Goat-Skin Umbrella, but which, after all, was the most necessary Thing I had about me, next to my Gun: As for my Face, the Colour of it was really not so Moletta-like as one might expect from a Man not at all careful of it, and living within nine or ten Degrees of the Equinox.

另一条较窄的皮带，斜挂在我的肩膀上，也用皮条系着。这条皮带的末端，在我左胳膊下，挂着两个山羊皮袋，一个装火药，一个装子弹。我背上背着筐子，肩上扛着枪，头上撑着一顶羊皮做的大阳伞，样子又难看又笨拙。尽管如此，除了枪之外，这把伞也是我随身不可缺少的东西。至于我的脸，倒不像穆拉托人那么黑，看上去像一个住在赤道九度、十度之内的热带地区那种不修边幅的人。

The fact is that wars do not enrich but impoverish the world and bold statesmanship will be needed if we are torepair the ravages of war and to insure to all the highest possible measure of labor standards,economic advancement and social security to which the Atlantic Charter looks forward.

事实上战争不会使世界富裕而只会使它贫穷，如果我们要医治战争创伤，保证达到大西洋宪章所展望的劳动水平、经济进步和社会安全的最高标准，政治家的胆识是不可缺少的。

P.G.泰特","Fourier's Theorem is not only one of the most beautiful results of modern analysis, but it may be said to furnish an indispensable instrument in the treatment of nearly every recondite question in modern physics.

&，&傅里叶的定理不仅是现代分析学最美妙的结果之一，也可以说它为解决现代物理学中几乎每一个难解的问题提供了一个不可缺少的工具。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。