optical 四级六级GMAT考研

Optical projector, tension tester, pressure tester and torsiometer are the testing instru-ments. Testing results can be typed automatically.

检测设备有投影仪、拉、压、扭力测仪，检测结果由测仪自动打印。

According to the properties of basic points of lens group and the varifocal principle of lens group,a varifocal optical system which has a fixed image space principal point has been designed.

根据透镜组基点性质和透镜组可变焦原理,设计定第二主点变焦系统。

New York and London have been connected by a giant "telectroscope"- a optical device placed under Brooklyn Bridge in New York and another one on the Thames River in London.

近日，一套巨型望远镜将纽约和伦敦“连”在了一起，其中一架望远镜安装在纽约布鲁克林大桥下，另一架则在伦敦泰晤士。

It may be understood by simulating the thermomagnetic recording of magneto optical films all kinds of factors that affect thermomagnetic recording.

磁薄膜进行热磁模拟可以了解影响热磁记录过程的各种因素及这些因素间的相互关系以及它们写入信息的影响。

Slit lmp microscope is an ophthalmologic opticalinstrument used to check preocular optical magnification .

裂隙灯微镜是借助放大原理，检查眼前部和眼内部的眼科仪器。

He has optical trouble.

他的视力有问题。

We found that porphyran is a kind of good material for optical limiter.

研究发现，卟啉类反饱和吸收材料有很好的限幅作用。

The benefits of movability in wireless communication and high capacity in optical communication are combined in optical wireless system technology.

无线系统技术结合厂无线通信的可移动性和通信的高容量的优点。

This increased optical density caused by a disassociation or melting of the DNA is called hyperchromicity.

这种由于DNA离解或融解引起的密度增加，称之为增色效应。

The wavelength division effect of grism in a multi-wavelengths optical system is discussed, the grism consist of a tranditional optical prism and a diffraction optical phase grating.

本文探讨稜镜栅在多波长操作系统中的分波效应。

Research on the failure reasons of the cooling tube were carried out by means of macroexamination, thickness measurement, X ray diffraction, optical microscopy and chemical analysis.

采用宏、微观分析、化成分分析等手段,冷却水管的腐蚀穿孔进行了失效分析。

The microstructures were studied with optical microscope, X-ray diffraction,electron probe and glow discharge spectro scopy analysis.

用微镜、X-、电子探针及辉逐层分析等方法进行了微观分析。

An experimental study of using the crossed pump-dividing stimulated four-photon mixing (SFPM) to measure the total disparsion of optical fiber is reported.

文中正交分泵受激四子混频应用于纤总色散的测量进行了实验研究。

The formation mechanism of orange valvule-like pinhole in rolled aluminium foil was investigated by using optical microscopy,scanning electron microscopy,and energy dispersion X-ray spectrum.

利用微镜、扫描电镜、能谱分析等验手段铝箔中"桔瓣"形针孔形成的原因进行了分析。

An optical fiber is a dielectric (nonconductor of electricity) waveguide made of glass or plastic.

纤是一种介质（绝缘体电）波导的玻璃或塑料。

By inserting a tube into the melted iron to form a greybody tube and to make the emissivity steady.The temperature of the melted iron can be obtained using a optical fiber thermometer.

其中一种途径即利用一个空芯导管插入铁水中,形成一个近似灰体腔,使腔内铁水表面发射率基本不变,然后利用纤比色测温仪示出温度。

A combustion-driven entrained flow reactor equipped with an optical particle-sizing pyrometry diagnostic and a rapid-quench sampling probe has been used for this investigation.

这里使用的带有测温元件和快速淬火取样探针的气流床反应器。

The synthetic medium of optical N acylalanines was N (2,6 xylyl) alanine.It was reacted with 1 menthol and prepared into its menthol esters which were purified by TLC, resolved and determined by HPLC.

活性杀菌剂的合成中间体N-（2，6-二甲苯基）-丙氨酸与l-薄荷醇在催化剂作用下，生成非映异构体的薄荷醇酯。

The applications of the phthalocyanines in photodynamics therapy, light bleacher, catalysts, disc, nonliner optical proper-ity, electroluminace, gas sensor, electrochromic was reported in detail.

简要介绍了酞菁化合物在动力疗法、漂白剂、化剂、电记录、线性、致发、体传感器、致变色、机超晶格等方面的应用。

The only way to make a real-time kinoform is to use the liquid crystal spatial light modulator.And the kinoform is valuable to optical information processing and optical measurements.

摘要利用液晶空间调制器制作相息图是目前惟一的一种能实现动态实时计算全息的方法，它在信息处理和测量方面具有重要的应用价值。