轭

Using pyridine-2, 6-dicarboxylic acid as starting material, a novel ligand N^2, N^6-bis(3-methyl-pyridine-2-yl)-pyridine-2, 6-dicarboxamide was synthesized, which contained multidentate and large conjugative system.

以吡啶－2，6-二甲酸为原料，合成含有多个共轭体系多齿配体N^2，N^6-二（3-甲基吡啶）－2-取代吡啶－2，6-二甲酰胺；同时制备它与稀土离子Tb和Eu的配合物，并培养出单晶。

The structure and stability of all possible isomers of C50X(X=SiH2, PH, S) were investigated by ab initio HF/3-21G calculations. The calculation results indicate that the preferred position for cycloaddition of SiH2, PH, and S on C50 is consistent, i.e. on the C3-C4 and C4-C4 sites of C50, and the resultant most stable cycloaddition isomers are [5,6]-closed and [5,5]-closed structures. The main driving force governing the stability of the C50X(X=SiH2, PH, S) isomers is the strain, or the conjugative effect, or the combination of strain and conjugative effect, depending on the addition positions and the types of the attacked C-C bonds.

用从头算HF/3-21G方法研究了C50的环加成衍生物C50X(X=SiH2， PH， S)所有可能的异构体的结构与稳定性，计算结果表明，SiH2基团、PH基团与S原子在C50上环加成的优先加成位置相同，都为C3-C4类键和C4-C4类键，并且相应形成[5，6]-闭环和[5，5]-闭环结构的最稳定异构体；决定C50X(X=SiH2，PH，S)各异构体稳定性的主要因素，因加成位置以及发生加成反应的C-C键的单双键类型的不同，可能是张力、共轭效应或者二者的共同作用。

And the way to improve the working state of this combined phase conjugator is brought forward by our modeling.

且由理论结果提出了一种提高该复合型相位共轭镜工作状态的有效方法。

An optical bistableoscillator with a double cavity self-pumped phase conjugator isproposed and the experimental results are given.

提出并实现了双环腔自泵浦位相共轭镜的双稳振荡。

A novel combined phase conjugator consisting of a fused silica rod and silica fiber is used in the high repetition laser system to improve the light quality.

提出了一种新型的由熔石英棒和石英光纤组成的复合型相位共轭镜，其可运用于高重复频率激光输入系统中以改善光束质量。

Pseudo phase conjugator in common path/common mode adaptive optical system.

共光路/共模块自适应光学系统中赝相位共轭器件的应用分析。

Pseudophase conjugator in common path/common mode adaptive optical system.

共光路/共模块自适应光学系统中赝相位共轭器件的应用分析。

In the case of 10% reflectivity, less than 3.7ns with 8.6:1 pulse-compression ratio has been observed. As our acknowledgement, that is the first reported.In addition, a new type of phase conjugator using tapered fiber is designed, which combined the higher reflectivity of small core-diameter fiber and higher damage threshold of large core-diameter fiber.

为了获得更高的能量反射率和稳定性，我们自行设计了一种新型的锥度光纤，并应用于LD泵浦的双通放大DPL系统中；实验表明：应用锥度光纤相位共轭器可以获得高达85％的能量反射率和90％的相对稳定度。

Recently, progress on algorithms casts distrust on thebasic assumption of braid-based PKC, i.e., the intractability of conjugator search problem—But people have not reached any definite conclusion as so far.

近年来，算法研究方面的进展对辫群密码系统的基础假设—共轭搜索问题困难性假设提出了质疑，但是并未形成任何定论。

Using a 200 μm-core multimode optical fiber as the phase conjugator mirror, an LD-pumped Q-switched four-pass MOPA system operated on 100 Hz repetition rate and 20 ns pulse width has been experimental investigated in this paper.

报道了利用多模光纤作为相位共轭镜应用于重复频率100 Hz，脉宽20 ns的电光调Q四通放大LD抽运激光器的实验研究。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。