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Simulation result shows that a solar furnace using an 8m×8m non-imaging focusing heliostat with 289 mirrors coupled with a spherical concentrator with 0.7m aperture and 27cm focal length is capable of achieving flux concentration of 25,000 suns.

模拟结果显示,使用由289块子镜组成的8m×8m的非成像聚光定日镜的太阳炉,配合一个0.7m口径,焦距27cm的球面二次反射镜,可以达到25,000个太阳的聚光效果。

A more prominent answer was given by Chen et al.in 2001 with the announcement of a new type of heliostat,called the non-imaging focusing heliostat.

然而该科学家并没有给出具体的曲面公式。陈等于2001年发表了无光象聚光定日镜理论。

With the single-crystal X-ray studies, the nanoscale rigid cavity of the aromatic macrocycle was approved, and nature of the heteromorphism of aromatic macrocyclic oligomer was also explained with the study of two kinds of single crystal with different steric structures.

并利用单晶X光衍射技术研究了三种不同结构的环状齐聚物的单晶结构,第一次通过大环分子与其对应线性齐聚物键长、键角和二面角的变化解释了聚芳醚酮类刚性大环分子环张力产生的原因。

After that, we found that TEA has more intense effect in photoinitiate process and more effective in transferring the resultant of dye, while the main effect of DPI is in the photopolymerization's transferring process, DPI can effectively increase the quantum yield efficiency and make the radical of monomer's more stable.

此外,研究发现,TEA在光引发阶段有更强的作用,并且传输染料的生成物时更有效,而DPI的主要作用是在光聚合的传输阶段,DPI能够有效提高光聚物的量子产率,并且使单体自由基更加稳定。

The electric heater is supplied from a photovoltaic solar energy system in sunny day.

第三种是聚光型太阳能系统,可以使所需的太阳能光电板面积大幅减少,进而使成本大幅降低。

Concentration contours of flux distribution for several interesting cases are presented,the different working areas of high flux footage from 5,000 suns to 15,000 suns have been compiled and photos showing the "powerful etching" of a steel plate by the hot spot of the solar furnace are also included.

我们列出了在几种有趣的情况下聚光比的等高线分布,还列出了从5,000到15,000个太阳,不同聚光倍数的工作区域。照片显示了该太阳炉在钢板上强大的"刻蚀"效果。来源:Ab79797BC论文网www.abclunwen.com

As to the assumption of stationary state,...

我们讨论了热、光和催化剂分解引发的加聚反应动力学,结合自由基型加聚反应的特性,得到了动力学方程粗的解,推导出链段分布和平均分子量公式,证实稳定态假定对于自由基型加聚反应是可以应用的。

The spectroscopic and electrochemical studies suggest the energy structure of this class complex can be easily controlled by modification. With the introduction of electron-donating arylamino groups, the obtained complexes show intense and continuous absorption bands in the region of 250-550nm with strong metal-to-ligand charge transfer dπ(Pt →π* transitions (ε~ 2×104 dm3 · mol-1 · cm-1). Complexes involving the construction of D-π-A type systems also display continuous absorption bands in the region of 400-750nm, rising from the overlapping effect of MLCT and LL'CT bands.

其中,芳胺及其二聚体类修饰基团的引入,使其配合物MLCT吸收谱带的摩尔吸光系数增加,并在250~550nm范围内形成了强的连续吸收;具有D-π-A结构的配合物,由于MLCT吸收谱带和LL'CT吸收谱带的协同效应,导致在400~750nm范围内形成连续吸收;得到了从绿光到深红光的磷光发射系列配合物,并采用真空蒸镀的方法获到了外量子效率分别为5.7%和5.0%的橙光和橙红光多层电致发光器件。

In this paper, we summarize the synthetic methods, structure features and photophysical properties of WSCPs developed in recent ten years, and their applications in a new generation of optoelectronic devices and bio-chemical detection. On this basis, we point out the existent problems in the present research and applications of WSCPs,and also give a perspective on their future.

本文总结了近10年来报道的水溶性共轭聚电解质的结构特点和合成方法,以及对不同化学或物理条件下光物理性质的研究,归纳了它们在新一代光电器件制作和荧光传感中的应用,并在此基础上提出了水溶性共轭聚电解质研究中尚待解决的问题,并展望了水溶性共轭聚电解质的应用前景。

The design principle of the laser receiver with wide FOV for the laser command guidance and laser-beam riding guidance is introduced. A mathematic model of receiving light field is presented. The formula for the viewing angle of the detecting optical system was derived according to the diffraction light field of the oblique incidence parallel light. Taking a detecting optical system with the collecting objective for example, the design characteristic that the receiving optical system needs not only an extra large relative aperture but also an unvignetting receiving performance is discussed on the premise of meeting the requirement of 1064nm WFOV laser receiver.

介绍激光指令制导和激光驾束制导的大视场激光接收机的设计原理,给出接收光场的数学模型,由斜入射平行光的衍射光场推出探测光学系统的视场角公式,根据1064nm大视场激光接收机技术要求,以聚光物镜型探测光学系统为例,探讨接收光学系统既须具备特大相对孔径,又须具备无晕接收性能的设计特点,采用窄带干涉滤光镜进行光学滤波降噪。

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推荐网络例句

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。

This is not paper type of business,it's people business,with such huge money involved.

这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。