查询词典 requisite

If a switch contact mechanism is built so that it can be actuated by the application of a magnetic field, and an electromagnet coil is placed in the near vicinity to produce that requisite field, it will be possible to open and close the switch by the application of a current through the coil.

如果一个开关联络机制，是建立，以便它能够驱动的应用磁场和电磁线圈放置在附近一带生产的必要的领域，将有可能打开和关闭交换机的应用电流通过线圈。

Fishing-rod, fish-hook and other line tackle, fish-landing net, butterfly net and similar net; decoy "birds" and similar hunting or shooting requisite

钓鱼竿、鱼钩和其他钓具：捞鱼网、捕蝶网和类似用网；诱饵"鸟"以及类似捕猎或射猎和必需品

Requisite notice, the Authority will fix a date for hearing case before determining the application.

请，或委员会成员发出要求召开会议通知书，委员会就申请作出决定之前，会择定日期

In his Chinese verse the words "x ray" and "energy" were printed in English script, giving the requisite touch of exoticism to the flamboyantly personal message.

在这首诗里，郭沫若运用X和energy两个英文字，为他夸张的语句增添异国风情。

Agriculture is the foundation of nation economic, its elementary requisite is glebe.

农业是国民经济的基础，土地是农业最基本的生产要素，也是农民最基本的生活保证。

Hef was in the house for a celebrity gathering sponsored by the home team, flanked by a few of the requisite lovely companions, and it didn't matter.

他更像是去参加快船队主办的一场名人聚会，当然，也少不了他旗下的那群辣妹。

The first requisite in a historian is to have no ability.

当历史学家的首要条件是没有任何发明能力。

Thus the law of supply and demand of labor is kept in the right rut, the oscillation of wages is penned within limits satisfactory to capitalist exploitation, and lastly, the social dependence of the laborer on the capitalist, that indispensable requisite, is secured; an unmistakable relation of dependence, which the smug political economist, at home, in the mother-country, can transmogrify into one of free contract between buyer and seller, between equally independent owners of commodities, the owner of the commodity capital and the owner of the commodity labor.

这样，劳动力的供求规律就保持在正常的轨道上，劳动力的变动就限制在资本主义剥削所容许的范围内，最后，工人对资本家必不可少的社会从属性即绝对的从属关系得到保证。政治经济学家本国，即宗主国，可以花言巧语地把这样绝对的从属关系描绘成买者同卖者之间的自由契约关系。

Of course we know that every day serious "classical" works are being composed by contemporary composers like Yiannis Xenakis and John Adams and hundreds of others, but yet many of their works have yet to be stamped with what the vox populi consider to be the requisite imprimatur of historicity to be considered sufficiently "classical."

我们当然知道，当代的古典音乐家从未曾停止过创作新的"古典乐"作品，他们中包括Iannis Xenakis，John Adams，以及不计其数的同道者。然而，许多这样的作品仍需被贴上"人民的认同"这样的标签，才算是得到了必须的认可，才能被定论为"古典"。

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。