查询词典 closed set

Through the analysis of the work principle of three phases voltage resource PWM converter, set up the low and high mathematic models, deduce the restriction equations about grid voltage, grid current, modulation voltage and the DC output voltage and the calculation equations of the AC-side inductance and the DC-side capacitance. There are two control strategies are adopted: Predicted current control strategy and voltage-current two closed-loop control strategy, and give a comparison by theory and practice.

通过分析三相电压源型PWM变换器的工作原理，分别分析了低频和高频数学模型，并推导出了交流侧电压电流、调制电压、直流侧电压之间的数学约束关系以及交流侧电感和直流支撑电容参数的选取依据公式；分析对比了两种控制策略：预测电流控制和电压电流双闭环控制并加以实验验证；同时采用了负载电流前馈补偿和本文提出的一种基于专家系统的神经元新型智能PI控制器两种方法大大提高了整个系统的动态响应性能，并在仿真和实验中加以验证，这也是本文研究的重点内容之一。

The traverse grinding can be assumed as the sum of several stepwise plunging grindings with respect to the grindings contact area. The dynamic model of workpiece and grinding wheel stepwise plunging grinding was set up in the form of closed loops.

基于再生颤振机理，以切入磨再生颤振建模为基础，将外圆纵磨过程简化为多步以磨削接触区为磨削宽度的小切入磨的叠加，建立了工件、砂轮小宽度切入磨动力学模型并对其稳定性进行了研究。

The closed-loop fuzzy system is divided into a set of operating subregions, and the fuzzy system in each subregion consists of a nominal subsystem and a group of interacting subsystems.

对闭环模糊系统划分子区间，在每个子区间中模糊系统由一个占优的标称闭环系统和一系列关联子系统组成。

Open the valve view angles instruction set, to avoid the reversal of more than open the width of the closed position must not exceed.

打开阀查看角度指示盘，避免扭转超过开启宽度、关闭位置也不可超过。

Automatic sprinkler systems-wet sprinkler system, with the exception of high and low voltage power distribution room, a fire control center, elevator machine room, equipment room, water, toilet, both set up a spray system that uses temperature of 68 ℃ action of the closed glass nozzle .

自动喷水系统采湿式自动喷水系统，除高低压配电室，消防控制中心，电梯机房，设备机房，水箱间，卫生间外均设置自喷系统，采用动作温度为68℃的玻璃闭式喷头。

He set up another shield wall there, and as each unit retreated to it the wall opened to allow them in, then closed behind them.

他建立起了另一道盾墙，当每一个小队撤退时，那道墙打开以使他们进入，然后在他们进入关上。

Someone, but never got around to it.They also had neglected to set up a record keeping system, and one day a couple of months after opening, they put a sign on the door reading, We're closed today so we can figure out if we're making any money!|!

他们也没有建立记帐的流程，开幕几个月后，有天店面突然大门深锁，门口放了一个告示板，上面写着：&本店今天不营业，因为我们得了解这家店是不是有在赚钱！&

It set DY in an even greater panic, who heaved up two or three stones, hurled them at the figure and instantly closed his eyes for fear of seeing the figure's death.

段誉见他又纵上数丈，情势已渐危急，当下举起几块石头，对准他头顶掷了下去，双目一闭，不敢瞧他堕崖而亡的惨状。

The author has studied large amount of literatures, set up comprehensive control methods for stationary and transient engine control and introduced a new closed-loop observer and nonlinear fuel film compensator based AFR control method.

作者在查阅大量参考资料的基础上建立了完整的基于发动机平均值模型的汽油机静、动态控制模型，提出了基于发动机闭环状态观察器和非线性油膜补偿器模型的瞬态空燃比和启动工况空燃比控制方法。

Maputo, Mozambique, 14 Dec – The private consortium that manages the Mozambican port of Nacala and the railway system in the north of the country, Corredor de Desenvolvimento do Norte, is set to reopen some stations on the railway system on January 1 2006, which had been closed since the beginning of this year, Maputo daily newspaper Notícias reported Tuesday.

莫桑比克马普托12月14日电－马普托《新闻日报》周二报道，经营莫纳卡拉港口和北部铁路系统的私人财团Corredor de Desenvolvimento do Norte将于2006年1月1日重新开放铁路系统的一些车站。这些车站在今年年初关闭。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。