无光的

A standard accessorial reflecting mirror was incorporated into the beam path of an interferometer to build up a autocollimating system for measuring the aspheric wavefront aberration of paraboloidal, ellipsoidal and hyperbolic mirrors with the method of aberrationless point.

为了检测抛物面、椭球面和双曲面镜，在干涉仪工作光路中加入一个标准辅助反射镜，组成自准直系统，采用干涉法中的无像差点法实现对非球面波像差的检测。

The visual acuity and light sensitivity were altered by TTT in the eyes with absolute scotoma.

所有被检出有绝对暗点的患眼治疗后视力均无明显变化，视网膜的光敏度不变。

Results Absolute scotoma appeared in 7 eyes and relative scotoma in 6 eyes before TTT. Among the 6 eyes with relative scotoma, the visual acuity was improved over 2 lines in 4 eyes after TTT, descended 1 line in I eye and unchanged in 1 eye. The light sensitivity of the irradiated retina was increased in 5 eyes and decreased in 1 eye.

治疗后与治疗前相比较，6眼TTT前检出相对暗点的患眼中，治疗后视力提高者4眼，1眼视力下降，1眼视力无明显变化；6眼中5眼TTT治疗后激光照射处视网膜的光敏度提高，1眼降低。

It had four hundred sections—each partitioned by semiopaque plastic curtaining, and each fitting with a sterile-field generator that blazed with its characteristic orange light overhead.

它有四百个分区——每一个都被半透明的塑料帘隔开，里面装有一个无菌区域发生器，用特有的橙色光从头顶上把这里照亮。

This creates a shadowless light over the face that is still flattering.

这样的设计可以再照镜子的时候在脸上营造出一种无影光效果。

As Ethernet Passive Optical Network is one of the most effective ways for broadband access, it is important to set up a stable and effective network management system.

以太网无源光网络是宽带接入的最有效方式之一，为其建立一套稳定、有效的EPON网络管理系统显得尤为重要。

24H treatment group compared with 24h model group: the density of light of HSP70 of the group increased and which of TGF-β〓, is not different with the model group; the density of the light the HSP70 of the Baicalin group increased and which of it the TGF-β〓, increased with the model group; the density of light of the Concha Margatitifera Usta is not different and which of TGF-β〓, increased with the model group; the density of light of the Cholic Acid group is not different and the density of light of it of TGF-β〓 increased with the model group; the density of light of the Hefang Group is not different and which of TGF-β〓 is not different than the model group.

合方治疗脑缺血12小时组缺血脑组织TGF-β1光密度值较缺血12小时模型组无显著性差异（p＞0.05）。本实验结果发现，与单纯缺血12小时、24小时大鼠相比，药物干预组缺血侧大脑皮层TGF-β1免疫反应明显增强，计算机辅助图像半定量分析两组间缺血侧大脑皮层TGF-β1免疫阳性细胞数差异非常显著。说明药物对局灶性脑缺血损伤可能有一定保护作用，其机制可能与诱导脑细胞TGF-β1合成增加有关。然而，药物调控TGF-β1表达，其促TGF-β1表达增强的机制可能是这样的：脑缺血时TGF-β1mRNA表达增加可能与缺氧诱导神经和胶质细胞刺激生长因子表达有关。

With the development of society, more and more sound absorbent material was needed. In this study the characteristics of the binder system containing cement, ceramisite, fly ash and vesicant were investigated.

本文以微孔吸声结构原理为主要设计依据，以抛光砖废料制备的陶粒、膨胀水泥、粉煤灰以及造孔剂、防水剂等为主要原料，采用混凝土成型法成型，研究开发一种无有害成分的环保型吸声材料。

A structure of the switch is given, which has an ideal extinction ratio and is characterized by its easy alignment and no strict confinement of the length along Z-axis.

介绍了这类开关的一种结构，它有理想的消光比，并具有校准方便，对沿Z轴长度无严格限制等特点。

BLD-3351 series pressure/ differential transducer has N type and S type; apheliotropic blue LCD screen overcomes unread ness in night;Intelligent series use local button, can adjust zero or reset range.

BLD-3351系列压力/差压变送器针对国内不同用户的要求，同时推出 N 型、和 S 型二种规格；背光蓝屏液晶表头克服夜间无法读数的缺陷；智能系列通过就地按钮，可现场调零或重新标定量程，通过手操器或通讯软件还可实现无源标定和数据组态。

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。