可反射的

Although the production of relatively small achromatic and apochromatic refractor telescopes of up to 15cm, and catadioptic systems of up to 18cm, all with a variety of accessories at Jena would continue until 1994 when it was realized that Zeiss could not compete in the world market; the Zeiss "APQ" refractor telescopes optics were among the finest in the world but the inability to Zeiss to adapt these products promptly to the realities of a free marketplace assured their demise.

虽然耶拿厂可以生产相对小点口径的消色差和复消色差折射望远镜（口径最大可达15cm），还有口径最大可达18cm的反射折射望远镜系统，而且产品规格类型丰富，但蔡司在1994年还是意识到，不能在此类产品的世界市场上继续竞争了；蔡司的"APQ"系列折射望远镜产品确实属于世界顶级产品之列，但蔡司不具备在自由市场经济环境下，迅速调整改进此类产品的能力，所以决定此类产品停产。

By taking advantage of a corollary of the Desargues theorem and the corresponging extension of Desarguesian configuration, the concept of stereohomology has been defined in projective geometry and presented based on homogeneous coordinates. Consequently, a series of geometrical transformations, such as central projection, parallel projection, centrosymmetry, translation transformation, reflection, rotation transformation, which can be contained in it or derived from it have also been analytically defined.

利用Desargues定理的一个推论和引申的Desargues图形，给出"空间透射"在射影几何意义下基于齐次坐标表象的解析定义，从而解析定义了可蕴涵其中的中心投影、平行投影、中心对称、平移、反射等几何变换以及可由此衍生出的旋转变换。

The distributive range and thickness of volcanic rocks can be predicted by their seismic reflection features,and the distributive law can be analysed by strata whose geology is revealed through well drilling.

通过火山岩在地震上的反射特征，可预测火山岩的分布范围和厚度；通过钻井地质揭示的地层，可研究火山岩的分布规律。

Gold 's is mainly used in gold reserve , decoration , coins and currencies . Gold can be also used as touch point of down lead and suppresser in diode and transistor .

金的主要用途：金主要做黄金储备，装饰口及货币，此外在二极管和晶体管中可作引线的触点和抑制器，还可作能量反射器。

The accuracy of the MFC was 3.8%FS, and the Rotor Flow Meter's was 2%FS. 2. The measurement of pressure was carried out by using semiconductor silicon piezometer. With the static pressure in inlet of pipeline and theoretic analysis we could get the total pressure of MPT.

3可在真空下稳定工作的新型微波源功率的测量较为方便，通过改变控制电压的大小可以调节输出功率，通过测量衰减检波器的输出电压信号可实现反射功率的测量。

The hemispherical spectral reflectivity of the surface of a strip tangent to an integrating sphere is determined by a high-speed lock-in technique. At the same time, the radiance temperature of the strip is measured by the multi-wavelength high-speed pyrometer from approximately 1000 K to the melting point.

带状试样被亚秒级的脉冲大电流通电加热到溶点，其表面的光谱半球反射比利用高速的数字锁相技术可方便地获得，同时一台多波长高速高温计可测量被测试样从1000K到溶点的光谱温度。

Thus, the secondary edge reflector heats the edge and reduces thermal gradients across the susceptor and the semiconductor wafer to inhibit slip dislocations in the wafer during epitaxial layer deposition.

这样，二次边缘反射器便可加热外边并减小横越衬托器和半导体晶片的热梯度，从而可在外延生长层沉积时阻止晶片内滑移位错的发生。

objective to evaluate the effect of urapidil on the treatment of congestive heart failure.methods thirty patients with congestive heart failure were included in the study.urapidil was given by intravenously guttae at 50mg 5~7days.results systolic blood pressure and l dbp were decreased and sao2 and cardiac output were increased after treatment.conclusion intravenous urapidil produces acute hemodynamic benefit in patients with congestive heart failure.

目的 观察利喜定治疗充血性心力衰竭的临床疗效。方法 30例充血性心力衰竭患者，先以利喜定12.5 mg稀释于20 ml生理盐水中于3~5 min内静脉注射，继以利喜定50 mg、多巴胺20mg加于250 ml液体中静滴，每日1次，滴速为利喜定100~400 μg/min，连用5~7 d。结果利喜定可显著降低收缩压、舒张压，升高血氧饱和度、左室射血分数，不引起反射性心率增快。结论利喜定治疗各种原因引起的充血性心力衰竭，可有效改善患者的临床症状和血流动力学指标。

The mirror is applied in laser beam expand system, it can not only control the sending and incepting directions of the high energy laser beam accurately, and adjust the oblique high energy laser beam, but also can improve the beam quality by minishing the mirror thermal distortion.

本文介绍了一种应用于高能激光系统中的新型二维快速控制水冷反射镜，既可实现精确控制激光发射和接收光轴的方向，对光束整体倾斜方向进行校正，又可实现减小镜面热畸变提高光束质量的功能。

It is shown that it is difficulty to differentiate each vegetation type among sub-tropical evergreen forest, sub-tropical coniferous forest and sub-tropical deciduous forest because of the mixture of their tree spectra. According to the reflection index in the wavelengths of 750 nm to 1 100 nm, the tree species can be divided into 4 groups with descend in reflectivity. Each tree specie can be differentiated from each other according to its slope of the spectrum curve and its reflection index in the wavelengths of 770 nm to 1 010 nm for each forest vegetation type. The unique first order derivative feature can be used to identify litsea, alder, fir, red birch, southwest birch, large schima confertiflora, taiwania flousian and small leaf schima confertiflora.

研究表明：亚热带常绿阔叶林、亚热带针叶林和亚热带落叶阔叶林等植被类型，因其树种间光谱特征混淆严重，而难以彼此区分；根据其反射率在750~1 100 nm范围上的差异，可将其归为4类；就各植被类型而言，其树种间在光谱曲线坡度，以及在770~1 010 nm范围上具有显著差异，可据此将其区分；木姜子、桤木、杉木、红桦、大叶木荷、秃杉和小叶木荷等因具有独特的光谱一阶导数特征，据此可以识别提取。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。