查询词典 ratchet coupling

Seven type II UV absorbers of benzotriazol structure were prepared by diazotization,coupling,reduction and alkylation.Their structures were characterized by IR,MS and elem entary analysis.

通过重氮化、偶合、还原和烷基化反应合成了7个I型苯并三唑类紫外线吸收剂，并经红外光谱、质谱、元素分析等手段确证结构，其中6个为新化合物。

Both aurora display and auroral electrojet, as the most important manifestations of the energy coupling between the magnetosphere and the ionosphere, are resulted from particle precipitation,and greatly enhanced during substorms. However, they have rather different behaviors and AE-dependences.

极光活动加剧和极光电集流增强是磁层-电离层能量耦合的两种重要表现形式，它们同为磁层带电粒子向电离层沉降的结果，但是变化规律却非常不同。

The frequency pairing of the twodimensional (2D) cubic nonlinear phase coupling was studied.

针对二维三次非线性相位耦合分析中的分维配对问题进行了研究。

The coupling visibilities of temperature sensor heads were measured with phase lock loop technique.

采用锁相环技术测试了各传感器的分光可见度随温度的变化关系。

It also features automation solutions with integrated software, visualisation and controls as well as system engineering, coupling technology and services.

此外，它还采用集成了软件、可视化和控制，以及系统工程、耦合技术和服务的自动化解决方案。

The epoxy-based second-order NLO polymer was synthesized through the coupling reaction between p -nitrophenyl diazonium salt and an epoxy-based precursor polymer,which was prepared by the polycondensation of diglycidyl ether of bisphenol-A and aniline Bi-component (BPAN-lA-NT/M2OS) thin films were prepared by spin-coating from the solution of BPAN-lA-NT mixed with certain amount of a cross linking agent M2OS.

通过双酚A-二与苯胺的逐步聚合反应合成环氧树脂类先驱聚合物BPAN ，进一步通过先驱聚合物的后重氮偶合反应，制备了侧链带偶氮生色团的二阶非线性光学聚合物BPAN-1A-NT。

On the basis of the above, a spatiotemporal coupling integral equation was suggested in the groundwater cone of depression and was solved under the cylindrical coordinates.

在此基础上建立单元盆地在降落漏斗区域的时空分布积分方程，引入柱坐标系进行解答。

The study on the transmission mechanism of power flow in complex coupling system, which aims at the optimum contr...

基于传递功率流控制原理研究复杂系统的动态特性与最优设计，是目前振动噪声领域的前沿课题和发展方向。

The manipulators in a closed chain have to be constrained in their kenimatic and kinetic formulations, in addition to deal with their highly nonlinearities and strong coupling between joints.

在闭合链中，各机械手的控制除了要涉及自身动力学方程的高度非线性和强耦合之外，还要考虑闭合链对它们的运动学和动力学约束。

METHODS: Oleanolic acid and cholic acid were coupled with active small poptides; the activity of the coupling compounds to induce T lymph cell proliferation was studied.

以齐墩果酸和胆酸为母核，分别与活性小肽偶联，考察此类偶联物对T淋巴细胞增殖的影响。

" I' d like to get some rough idea about music in the baroque ear, please."

请简要介绍一下巴罗克时期的音乐，好吗？

The results showed that the peak latency and pattern of SEPs elicited by electrical needling in LI-l1 and MP were similar. The amplitude of SEPs elicited by electrical needling in LI-l1 was higher than that of MP. There was no obvious SEPs generation when MM was electrical needling.

结果显示，电针刺激曲池穴和其邻近桡侧伸腕长肌运动点诱发性脑电波的波形和波峰时间是类似的，只是穴位的诱发性脑电波波幅较大，而电针刺激非穴位点并没有明显的诱发性脑电位。