光导

Under the small-signal approximation, the effects of the waveguide length and the response flatness on DFG-based wavelength conversion are investigated by use of matrix operator, and then a feasible scheme to expand conversion bandwidth and pump bandwidth is proposed.

在小信号近似条件下，利用矩阵计算的方法分析了波导长度和转换效率的波动性对基于差频效应的波长转换器带宽的影响，给出了扩展信号光转换带宽和抽运带宽的优化设计方案。

The recent progresses in the study on the fluorescence of rare earth complexes and application for the determination of the rare earth elements and organic compounds, as fluorescent probes for bioactive materials analysis and as detection means in separation technology were reviewed in detail. In chapter two, the absorption spectra of the 4f electron transitions of the complexes of the neodymium, praseodymium, holmium and erbium with fleroxacin in the presence of CPC have been studies by normal and derivative spectrophotometry.

本文以稀土元素配位化学为基础，以导数吸收光谱技术和荧光光谱技术为研究手段，利用新一代喹诺酮类抗菌药物，抗凝血类杀鼠药物的化学结构特点和大环化合物冠醚与金属离子突出的配位能力，以分析应用为目标，系统研究了这些化合物同稀土元素形成的配合物的光吸收和荧光特性，通过对体系实验条件的优化，使体系的稳定性、选择性和灵敏度得到显著改善。

The present invention is a fiber optic waveguide adapted for focusing a beam of light at an obtuse angle to the optical axis.

本发明涉及一适用于将光束以钝角聚焦到光轴上的光纤波导。

Finally, optical flow estimation is performed based on the least square method and partial derivative estimation.

然后通过最小二乘法并结合图像的偏导数进行光流场估计。

The cells were washed twice with 1 ml of D-Hanks buffered saline without phenol red, and then cultured with RPMI1640 medium without BPD-MA.

其介导的光动力治疗在皮肤肿瘤和眼内肿瘤的防治方面已表现出良好的应用前景。

In a photoconductive cell, light is used to regulate the flow of current.

在光电导器件中，光用来调节电流。

Amplifiers for photoconductive, photodiode and photovoltaic cells are shown in Figures 14, 15, 16 respectively.

光电放大器用于放大由光电导、光电二极管和光电池所得到的光强度信号，如图14、15、16。

Its photovoltaic and photoconductive actions make it useful in photocells, photographic exposure meters, and solar cells.

其光电压的和光电导的效应使它可在光电池、照相曝光表和太阳能电池中发挥作用。

Of both speed and linearity. It is obvious that the current through a photoconductive cell

光电放大器用于放大由光电导、光电二极管和光电池所得到的光强度信号，如图 14

Investigation results show that Srl-xLaxTiO3 film possesses superior photosensitivity characteristics in the range of visible light,and higher sensitivity and photoconductivity gain.

结果表明，Sr1-xLaxTiO3薄膜在可见光区域具有较好的光敏特性，其灵敏度和光电导增益都比较高。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。