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The speed-sensorless vector control and the identification of motor parameters in this paper are the two novel research of vector control.Using asynchronous machine's mathematic model in three-phase static reference frame, this paper has derived it's mathematic model in two-phase static reference frameand in two-phase rotating reference frame, and got the coordinate transformance formulus based on the constant magnetic force and power force, by compared different field orientation methods, we can find that field orientation at rotor field can realize the decoupling of the stator current flux component

无速度传感器矢量控制和电机参数辨识是矢量控制的两个新的研究方向，本文利用异步电机在三相静止坐标系下的数学模型推导出两相静止坐标系、两相同步旋转坐标系下的数学模型，根据磁动势守恒和功率守恒的原则，得出各坐标变换公式；通过不同磁场定向方式的比较发现，异步电机按转子磁场定向时定子电流励磁分量和转矩分量可以比较方便地实现解耦。

The researcher points out the analytic methods and steps then uses the two-dimensional hydrodynamic model to analyze the simulation of watercourse. There are three two-dimensional hydrodynamic models (inclusive of the RMA2 model, HIVEL2D model and FESWMS model) which are included identical range and limitation in our graduate school. The researcher chose the two-dimensional hydrodynamic model as the proper tool which can be used to simulate the flowof the old street stream. Researcher will transvaluation the retaining ability of the watercourse and consider the practice requirements to make the proper govern suggestion, furthermore, the results can be used as the reference of relative principles.

本研究旨在提出分析方法与步骤，使用二维水理模式作一河道模拟分析，由於本研究所介绍三个二维水理模式（包含RMA2模式、HIVEL2D模式、FESWMS模式）均有其适用之范围以及限制之条件，故本研究选定一适合模拟老街溪之二维水理模式作为水理分析之工具，藉由分析之结果，重新评估该河段之防洪排洪能力，并就实际整体防洪需求做妥善的治理建议，使研究成果能提供相关对策之参考。

The crystal consists of two similar but independent molecules in the asymmetric unit and the Ce ion coordinated toward ten donor atoms, six of which belong to the nitrogen atoms of two tridentate ligands and four oxygen atoms from two bidentate picrates.

晶体中一个不对称单元内有两个结晶学上独立的分子，这两个分子的构型基本相同，中心Ce3＋均与两个三齿配位的配体及两个双齿配位的苦味酸根配位，配位数为10。

Based on the contrast experiments of six full-scale non-seismic interior frames joints under low reversed cyclic load,consisting of two strengthened by Gluing Steels,two strengthened by CFRP and two unstrengthened,Contrast analyses were presented including the failure mode,hysteretic loop,and the stress of beam and column s bars,concrete,gluing steels and CFRP.

通过6个足尺框架中节点(2个粘钢加固，2个碳纤维布加固，2个未加固)在低周反复荷载作用下对比试验，对比分析了节点区破坏特性和滞回曲线，以及节点区梁柱纵筋、混凝土、钢板和碳纤维布的应力水平。

Two molecular forms of Xenopus hatching enzyme, 60kD and 40kD molecules, was obtained during preparation and purification. Both of them were verified as the hatching enzyme molecules, using anti GST UVS.2 antibody as the probe. 60kD molecule was digested or autodigested easily into 40kD molecule during purification. It was indicated that 40kD molecule was probably derived from 60kD molecule with its two CUB repeats lost, and the two CUB repeats may play an important role in recognizing and/or modifying of the molecular structure of vitelline envelope.

在分离纯化非洲爪蟾孵化酶时，得到了60kD和40kD两种分子，用孵化酶的特异性抗GST-UVS.2抗体进行Western杂交的结果证明二者均为孵化酶分子。60kD分子很不稳定，在纯化过程中极易降解，40kD分子可能是由60kD分子经过降解或自身降解丢失了两个CUB重复区而形成的，而CUB重复区很可能在对受精膜分子结构的修饰或改造中具有重要作用。

One zippered horizontal welted left chest pocket; one zippered vertical welted right chest pocket; two handwarmer pockets set behind two patched-on flap front pockets; two interior security pockets.

左胸拉链横开口袋，右胸拉链直开拿破仑式口袋，两侧按扣搭片暖手袋，暖手袋背后隐藏两个横向口袋，两个内部拉链安全口袋，衣服拉链全为高等级YKK拉链。

In crystal, two APC-PY trimers associate into a hexamer by face. The assembly of two trimers within this hexamer is very similar to that of C-phycocyanin and R-phycoerythrin hexamers, but the tight level of the assembly of two trimers within this hexamer is clearly not so much as that of C-PC and R-PE hexamers.

晶体结构中，两个APC-PY的〓三聚体通过面对面的方式缔合成一个〓六聚体，该六聚体内两个三聚体的组装方式十分类似于C-藻兰和R-藻红六聚体，但六聚体内两个三聚体组装的紧密程度上显然不如C-藻兰和R-藻红六聚体。

The femtosecond irradiation spectra was used to measure the radiation kinetics process. Fitted by the two exponent model, two time peaks were obtained, corresponding to the interband radiation and the surface defect radiation respectively. This results also strongly suggests that there are two relaxation pathways in the nanocomposite.

利用飞秒发射光谱观测凝胶玻璃中ZnSe纳米粒子发光动力学过程，采用双指数模型进行拟合，得到了两个时间组分：11.2ps和550ps，分别对应纳米品的带间发光和表面缺陷态发光，进一步证实了半导体纳米晶材料受激辐射的两种发光途径的存在。

Two staff used to walk in the Light of hand, even the no umbrella; Two people sitting back to back and used on the lawn in the afternoon, even if the sun is dazzling; Two people used to the cold winter with a cup of coffee you hand me a mouthful, even if it already cold coffee through ......

习惯两个人手牵手漫步在绵绵的细雨中，哪怕没有打伞；习惯两个人背靠背坐在午后的草坪上，哪怕阳光很刺眼；习惯两个人在寒冷的冬天手握着一杯咖啡你一口我一口，哪怕这咖啡早已凉透。。。。。。

After fixing the two sides standard sections, the hoisting machine loosen rope, pull out the two end horizontal pin of pillar, lift the pillar to the place of two section standard section's middle angle steel, the operation staff leave the suspension coop.

待两侧标准节连接固定好后，卷扬机松绳，拔出顶梁两端横销，用手摇起重机上小吊杆将顶梁提到新接好的两节标准节中间框架角钢处，穿好横销并锁定，操作人员离开吊笼。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。