查询词典 coupling

The main elements affecting load coupling characteristics among channels were analysed based on joint space dynamics equations of Stewart platform, and four kinds of load coupling evaluation index were presented with the matrix and vector norm theory.

基于Stewart平台关节空间动力学方程，分析了影响通道间负载交联耦合的主要因素，采用矩阵和向量范数理论提出了4种负载交联耦合评价指标。

We compare the results with the analytic results from the weak coupling limit and the strong coupling limit. As an extension, when think about the dispersion relations for SU(2) trapped bosons, we find that we can not get the inverse effective mass directly from the dispersion relations of the holon-isospin excitation for the wave function from Bethe equation is not the eigenstate wave function of the total momentum.

作为推广，我们还研究了无限深势阱中SU(2)玻色子的各类激发态的色散关系，发现由于直接的Bethe Ansatz 波函数不是总动量的本征态，所以不同通过直接的色散关系来给出质量有效质量比。

In this dissertation, InGaAs/InGaAsP/InP MQW microdisk laser and its characterization were presented. Some conclusions are as following: the characteristics of lasing threshold was discussed by using rate equation. The dependent relations between threshold and cavity volume, spontaneous emission coupling efficiency β were investigated. The whispering gallery mode and spontaneous emission in a microdisk geometry were then studied. Almost all spontaneous emission was coupled into the lowest order TE mode when the normalized thickness of photonics well was between 0.15 and 0.5. The design principle and device process of InGaAs/InGaAsP/InP MQW microdisk laser were presented. The microdisk lasers with the diameter of 8μm, 4. 5μm and 2μm were succesfully fabricated by using etching techniques. The pulse lasing thresholds for the microdisk with the diameter of 8μm and 4. 5μm were 170μW and 15μW, a record results compared with the published in the literature. The cw lasing threshold for a 2-μm-diameter microdisk was only a few μW. We haven't found similar report up to now. To solve the problem of directional output in a microdisk laser, the power coupling efficiency in a double disk geometry was investigated with the theory of waveguide mode couple. A new structure of electrically pumped microdisk laser with output waveguide was designed, making a foundation for the practical use of microdisk laser.

本文主要研究InGaAs/InGaAsP/InP多量子阱半导体碟型激光器的研制和特性表征，并取得如下结果：利用速率方程理论讨论了激光器激射阈值的特性，分析了阈值与腔体积和自发发射耦合系数β之间的关系；讨论了微碟光子阱结构中的自发发射特性和微碟中WGM模式特性；光子阱结构在其归一化厚度在0.15-0.5之间时，几乎全部自发发射进入到最低阶TE模式中；研究了InGaAs/InGaAsP/InP多量子阱微碟激光器的结构设计原理和器件的制备工艺；利用刻蚀方法成功制备出直径分别为8μm、4.5μm、2μm的碟型微腔激光器；直径8μm和4.5μm的微碟脉冲光泵浦激射阈值分别为170μW、15μW，是目前所见文献报导中比较低的；直径2μm的微碟连续光泵浦激射阈值仅几μW，目前尚未见到达到类似结果的研究报导；为解决微碟激光器激射光定向引出的问题，通过波导耦合模理论分析了双层碟之间功率耦合效率；据此设计了新型带耦合输出波导的电泵浦微腔激光器，为进一步研制可实用的电泵浦微腔激光器打下基础。

Other transmission products 18, Tsubakimoto JAPAN: transmission chain, cable protective cover, slow motor, coupling, Tensioner kits, torque limiter, overrunning clutch, electric putt, buffers; 19, JAPAN Concord produced by: AC electric drum, DC roller; 20, Japan Concord Industry: universal coupling; 21,: The United States aerogenes fetal-type brake clutch, water-cooled oil-cooling brake clutch; 22, Asahi Seiko: pneumatic brakes, pneumatic clutches, fluid couplings, bearings with Block 23, shinko JAPAN: electromagnetic clutches, electromagnetic brakes, vibration equipment; 24, kokura JAPAN : electromagnetic clutches, electromagnetic brakes; 25, Japan Muto motor: a variety of fans, dust collection machines; 26, Showa Japan: Precision rotary joint, steam joints, hydraulic, coolant dedicated joint; 27, Seiko Kobayashi JAPAN: Block Bearing Belt; 28, Taiwan·×: indexing device; 29, Seiko Epson: Precision multi-joint manipulator.

其它传动系列产品18、日本椿本：传动链条，电缆保护套，减速电机，联轴器，涨紧套，扭力限制器，超越离合器，电动推杆，缓冲器；19、日本协和制作所：AC电动滚筒，DC电动滚筒；20、日本协和工业：万向联轴节；21、：美国产气胎式刹车离合器，水冷油冷式刹车离合器； 22、日本旭精工：气动刹车，气动离合器，液力偶合器，带座轴承23、日本神钢：电磁离合器，电磁刹车，振动设备；24、日本小仓：电磁离合器，电磁刹车；25、日本武藤电机：各种风机，集尘机；26、日本昭和：精密旋转接头、蒸汽接头、液压、冷却剂专用接头；27、日本小林精工：带座轴承；28、台湾谭子：分度装置；29、爱普生精工：多关节精密机械手。

A high2efficiency coupling system was designed by using t heo ry of optical fiber coupling for t he high2power laser and t he beam t ransform , and in t he system numerical values of lens′apert ure and focus were optimized.

本文针对工业用大功率固体激光的特点，对光纤耦合系统的光束变换，大功率激光聚焦耦合的束宽等影响光纤耦合效率的问题进行了分析。

However,the mechanism of the interlayer coupling in some multilayers andthe correlation among the microstructure,interlayer coupling and other effects such asMOKE are not well understood.

然而，对于一些多层膜的层间耦合的机制和层间耦合与其相关磁性及磁光效应的内在关联性还有不少问题需要深入的研究。

Spin coupling rules of ground state of 2,2′-bipyridyl as coupling unit and four radicals as spin centers have been studied by AM1-CI methods.

以2，2′-联吡啶为耦合单元，用*CH2，HNO*NH和*O四种自由基为自旋中心，设计出五种体系的分子。

Pd(PPh3)4 is more reactive for boronic acids with steric hindered F atom and no self-coupling by-product, and coupling reactions gave good yields of 90% and 91%.

Pd(PPh3)4对于含有位阻F原子苯硼酸的偶联反应很具有活性，且没有自偶联产生，产率可达90%及91%。

Pd(PPh3)4 was more reactive for boronic acids with sterically hindering F atom, and the coupling reactions gave good yields of 90% and 91% without any self-coupling by-product.

Pd(PPh3)4对于含有位阻F原子苯硼酸的偶联反应很具有活性，且没有自偶联产生，产率可达90%及91%。

By focusing on the coupling of water and fertilizer and using all-purpose regression design with four factors and five levels, and based on pot experiments and quantitative analysis, the coupling effect of water and fertilizer on Casuarina equsetifolia biomass was studied in order to solve the inconsistency problem of water and fertilizer supply on coastal sandy land.

针对滨海沙地因水肥不协调而形成大面积低效林分的问题，以水肥耦合为中心，以1年生木麻黄幼苗为研究对象，采用四因子五水平二次通用旋转组合设计，利用盆栽试验和定量分析的方法，研究探讨了在不同水肥条件下，水、N、P、K四因子对木麻黄生物量的影响。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷