查询词典 optical density

The method of diffractive optical elements, such as processing and transmission grating dense optical material from the traditional extended to ordered nano-pore materials, is expected to apply to the manufacture of high performance diffractive optical elements.

该方法将衍射光学元件如透射光栅的加工由传统的致密光学材料扩展到有序纳米孔材料上，有望适用于制造高性能衍射光学元件。

The new fluoride glass wire, or optical fibre, is a major improvement over the optical fibres now used in many modern communications systems.Present optical fibres are made from silica glass.

这种新的氟化玻璃线或者光导纤维是在普遍用于现代通讯设备中所使用的光学纤维的基础上的一项重大改革。

All-optical devices, such as in-line electrooptic modulation, all-optical wavelength converter and all-optical switch , built from this effect, as well as its applications in the AON are also studied in this paper.

目前，石英光纤二阶非线性效应的研究方兴未艾，但对其机理的解释仍众说纷云，对其未来的应用研究还刚伊始，它是当前的研究热点之一。

Observing the extragalactic radio sources in both radio and optical wavebands is the important method to construct the relationship between radio and optical reference system. Since the precision of radio positions of radio sources is better than lmas, determination of optical positions of radio sources is the key step.

实现射电与光学参考系连接的一个重要手段是在两个波段观测河外射电源，由于射电源的射电定位精度已达亚毫角秒，因此河外射电源的精确光学定位是关键。

Firstly, the circumstances of focimeter, the working principle of automatic focimeter, the MCU ARM and the picture sensor are introduced in this paper.And then based on the optical principle of the automatic focimeter, the research on the optical arithmetic of lens'parameters and the arithmetic on the picture point are presented.And after that, the design of the whole system,the design of the optical system,the design of the mechanical system and the design of the electrical system are discussed . And then the design of the hardware system and the design of the software system are emphatically discussed.

本文首先介绍了焦度计的概况、自动焦度计的工作原理、ARM单片机及图像传感器；然后结合自动焦度计的工作原理，对焦度计中一些光学参数的算法以及中心像点的位置检测算法进行了研究和讨论；接着介绍了总体方案的设计、光路系统的设计、机械系统的设计以及电气系统的设计；接下来重点讨论了硬件和软件的设计。

Using the amplification transfer function of type Ⅰ BBO crystal, the theoretical study of spatial properties of the optical parametric fluorescence generated by homochromatic signal and polychromatic signal in optical parametric amplification is investigated, The numerical simulation results demonstrate that when the homochromatic signal is injected into optical parametric amplifier, the fluorescence signal is first emitted in a cone and then in a ring while centering on the pump wave direction.

采用第Ⅰ类相位匹配BBO晶体的放大传递函数方法，分别对光参量放大过程中单波长信号光注入和多波长信号光注入出现的参量荧光的空间特性进行了详细的理论研究。

"The wire is very promising in many areas, where larger-width optical waveguides are currently used, such as microphotonic devices for optical communication and optical sensing," explained Limin Tong who is currently working in Mazur's group.

&这种丝在很多领域都很有前途，例如用於光通信和光传感的微光子设备，在这些领域目前使用的都是直径较大的光学波导。&

The Fresnel lens in the optical receptor spotlights the headlamp beams to form their image at the 1-meter distance between the optical receptor and headlamps. CMOS camera as an image sensor, takes the photos of their images, which are captured by VG-M201, The application of some digital image processing techniques to these images, such as edge-picking up、 least-square fitting-curve algorithm, is to calculate the offset position/angle of optical axis of the high beams and the nodical offset of the unsymmetrical facular light and shade cut-off line of the low beams.

系统的图像采集工作是利用受光箱中的菲涅耳透镜在1米的测量距离上聚合前照灯灯光，由CMOS摄像头作为图像传感器件，照入灯光远光光斑和非对称近光图像，由嵌入式处理器对捕获的图像运用边缘提取、最小二乘法拟合曲线等数字图像处理技术计算出远光主光轴偏移角度以及非对称近光光斑明暗截止线拐点的偏移，实现了前照灯近光非对称光斑的自动测量。

Based on the development of key techniques,such as fabrication of optical fiber probe and probe-sample distance nonoptical control, ete,we have built a scanning shear force near-field optical microscope ,which can be combined with an inverted optical microscope.

在发展光纤探针制备和探针与样品近场间距非光学控制等关键技术基础上，我们研制成能与倒置光学显微镜联合使用的扫描切变力/近场光学显微镜，并具有反射和透射等工作模式以及能在溶液环境中工作。

Results show that nonspiral plate may adjust the optical intensity distribution in focal region considerably, so we can alter and control the optical intensity distribution in fbcal region by changing the vary rate of phase variation. This technique can be used to carry particles in optical tweezers system

数值模拟结果表明：通过调节相位片的相应变化率，可能方便地调节焦点区域光强分布，因此可通过调节相位片的相位变化来控制和改变焦点区域光强分布，这种技术方法可应用于光钳系统中控制搬运微小颗粒。

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。