查询词典 optical density

To ameliorate the field of view of Cassegrain optical system,a diffractive optical element is first successfully introduced to the Cassegrain optical system and the design scheme is provided in this paper.

为了改善卡赛格林光学系统的视场，首次将衍射透镜成功地引入大视场卡赛格林光学系统的设计中并给出了设计方案。

The designed method of optical imaging system and optical scanner have been described. This optical system consists of two aspherical mirrors i.e. Cassegrain system, the designed datas have been given.

描述了光学成像系统和光学扫描系统的设计方法，光学系统是由两个非球面反射镜所组成，并给出了光学系统设计的各种数据。

Focal length is one of the most important optical characteristic parameter of optical lenses and optical instruments.

焦距是光学透镜和光学仪器的重要光学特性参数。

Article 17 The disposal of the optical disk replication production equipment of an optical disk replication entity closed down upon investigation and punishment and the confiscated optical disk replication production equipment shall be subject to the orientation examination and approval of the local provincial press and publication administrative department within its jurisdiction.

第十七条被查处关闭光盘复制单位和被查缴的光盘复制生产设备的处理，由所在地省级新闻出版行政部门在本辖区内定向审批。

Experimental results show the recognition rate of the method is 95%for a known expresser and 72% for a novel expresser. Aiming at the shortcomings of optical flow technique,two improved optical flow algorithms are presented.One way is to introduce forward and backword constraint eqution and Hessian matrix of optical flow equation is computed.The well- posedness of each point of local neighbourhood is examined and the weight of Lucas-Kanade's method is defined as the reciprocal of the conditioning number of its Hessian Matrix.

3针对传统光流法的缺点，分别提出了两种不同的改进方法：其一为引入前向-后向光流方程，计算其Hessian矩阵，把Hessian矩阵条件数的倒数作为Lucas-Kanade光流法的加权阵，可有效消除局部邻域中不可靠约束点，同时提高基本约束方程解的稳定性；其二为针对传统光流法只适用于刚体运动的特点，在扩展约束光流方程的基础上引入了div-curl样条函数作为扩展光流约束方程的附加约束条件，给出了一阶和二阶div-curl样条约束下光流的数值解。

The invention relates to an objective lens for converging light emitted by a light source to irradiate an optical recording medium with the convergent light, an actuator having the same, an optical head for recording information on the optical recording medium and reproducing information recorded on the same, and an information recording/reproducing apparatus utilizing the same.

本发明涉及将从光源射出的光会聚并将聚焦光照射到光学记录介质上的物镜和配备有该物镜的致动器、以及将信息记录在光学记录介质上或对所记录的信息进行再生的光学头和使用该光学头的光学记录再生装置。

Secondly, coupling theory of optical fiber and the application of optical fiber coupler in optical system are introduced.

其次，介绍了光纤耦合理论和光纤耦合器在光学系统中的应用。

In this thesis, the oxygen sensitive materials and glucose sensitive materials had been developed by thermo-polymerization method including carrier covalence method and carrier covalence-cross linking method, and the properties had been investigated using the detection experiment of oxygen and spectrophotometer, at the mean time, the applications of oxygen sensitive materials in fiber optical gaseous oxygen sensor and fiber optical dissolved oxygen sensor, and that of biology sensitive materials in fiber optical dextrose sensor had been studied in this paper.

本论文采用热聚法(包括载体共价法和载体共价-交联法)制备氧敏感材料以及在此基础上制备了对葡萄糖敏感的敏感材料，利用氧测试实验或分光光度计对氧敏感材料进行性能评价，研究氧敏感材料在光纤气态氧传感器和光纤溶解氧传感器中的应用以及氧敏感材料在光纤葡萄糖传感器中的应用。

An optical cross-connect, comprises at least one controllable switch module and a distribution frame, which may be monitored by means of a network management system, the external and internal optical distributor inputs and outputs of which (ir1 to irn, er1 to ern) may be connected within the distribution frame, by means of several optical connection paths.

要约 光学的交叉连接器有至少一个可控制的开关模块和经过网络管理系统可监控的一个分配器框架，其外部和内部的光学分配器输入端和分配器输出端(ir1至irn，er1至ern)在分配器框架内经过多个光学的连接导线是可以连接的。

With the explosive increase in network traffic and the emergence of high performance optical network devices, such as optical cross-connect and optical add/drop multiplexer, wavelength-division multiplexing technology have emerged as a promising candidate for next-generation networks.

网络业务量的爆炸性增长以及高性能的光网络设备（如光交叉连接器OXC、光分插复用器OADM）的出现，推动波分复用技术（Wavelength-Division Multiplexing，WDM）成为下一代骨干网络的核心技术。

I was just taking her hand, to help her out of a car, and I knew it.

我只是握着她的手，扶她下车，但我知道这一切。

China and South Korea have excoriated Japan over its approval of new school books which they say whitewash the atrocities committed during Japanese occupation, and anti-Japanese protests have been held in Chinese cities. The lingering bitterness over Japan's past imperialism still threatens to mar relations between the big East Asian powers

中国和韩国强烈谴责日本通过新的中学历史教科书，他们认为这一教科书掩盖了日本在其占领期间所犯下的残酷暴行，反日抗议活动在中国数座城市发生，历史上日本帝国主义制造的痛楚无法被忘却，这有可能破坏东亚强国间的关系。