查询词典 Pole

The letter produces Li Zhigao of a Zhang Yunqing of floorwalker of deputy department class's leader and president of group of celestial pole medium, tang Qun of secretary-general of association of Chinese computer user, IT manager world carried out the leader such as chief editor Zhang Peng to attend this plenary meeting, leader more this congress made splendid speech.

信产部副司级巡视员张云卿领导和天极传媒集团总裁李志高，中国计算机用户协会秘书长唐群，IT经理世界执行总编张鹏等领导出席了此次大会，领导更为此次大会做了出色致辞。

In this article two functional modes of the Fly-back Converter (Continuous Conduct Mode and Discontinuous Conduct Mode) are particularly analyzed, which include their characteristics, applications, the critical pattern of two functional modes is argued, both the exact boundary from the angle of circuit parameters is crystallized, at the same time, basic principle of PFC under the DCM mode is introduced, which settle theoretical basis for the subsequent design; by establishing the mathematic model of the converter, a further investigation of the configuration is made, qualitatively and quantitatively, analyzed to settle exactly theoretical basis for the subsequent emulation and the experimental parameter; from the angle of steady-state analysis, the transfer function of the system is deduced to establish dynamic small-signal state equation, emulating the system with the help of matlab, then according to the simulation result and the theory of PFC revise the system, lastly, we adopt the project which add a zero-pole compensator to the voltage loop, by this way, a satisfied system performance is gained and the PFC scheme is ensured successfully; finally, based on the previously-done work, we combining with the situation of specific design requirement, acquired the numerical value of each unit devices in this converter

详细分析了反激式变换器的两种工作状态，连续模式(Continuous Conduct Mode ，简称CCM)和断续模式(Discontinuous Conduct Mode，简称DCM)以及各自的特点、应用场合，论证了两种工作状态的临界模式，从电路参数的角度明确了二者的界限，同时还介绍了DCM模式下PFC的基本原理，为后面的设计奠定理论基础；通过对整个变换器系统建立准确的数学模型，对此变换器的电路结构做了进一步的研究，定性、定量地分析了变换器各部分的工作状态，为仿真和实验参数的确定以及电路参数的优化提供理论依据；从稳态分析的角度，为系统建立了动态小信号状态方程并推导出系统的传递函数，利用matlab对系统进行仿真，进而根据仿真结果以及PFC的相关理论对系统进行校正，采用在电压环加入零点—极点补偿器的设计方案，得到了满意的系统特性并且保证了PFC的顺利实现；最后，在前面所做工作的基础上，结合设计要求计算出此变换器系统中每个元器件的数值，利用Pspice对其进行了仿真、优化，然后根据仿真结果搭建了硬件电路。

A small reindeer to fly to the North Pole to rescue an embattled Santa Claus and his flying deer, then in a clumsy flying squirrel under the direction of acceptance of a series to make it dizzy flight training courses, eventually it to overcome their fears, to carry out the rescue mission difficult.

一头小驯鹿为了飞往北极解救一位身处困境的圣诞老人和他的飞鹿，便在一只笨拙的鼯鼠的指导下，接受了一系列令它头晕目眩的飞行培训课程，最终它克服了自己的恐惧，去履行艰巨的解救任务。

Additional feet and a pole socket on one end facilitate vertical use, for FOH or cross-stage monitor applications.

额外的双脚上，一端垂直极插座方便使用，用于FOH或跨阶段监控应用。

For added flexibility, one end of the SH1294M's cabinet is fitted with a recessed well, or socket, which allows the system to be easily pole mounted on a speaker stand for FOH or cross-stage monitor applications.

为了增加灵活性，其中一个SH1294M内阁结束配有凹入良好，或插座，这使得系统可以方便地在一个杆位用于FOH或跨扬声器独立安装阶段的监控应用。

The forcer consists of four pole pieces that each have three teeth.

这个forcer由四杆件，各有三颗牙。

His fore finger, projecting from the sleeve of his coat, pointed up to the wretched little creature on the pole.

他从大衣袖筒里伸出食指，指着趴在电杆顶上的那个可怜的小东西。

Pike hand accomplishes the mission queen , come on the stage on foot from flower dartlike weapon hand, hand takes charge of a pair of wood pole system , decoratre with the design and colour feather or the flower dartlike weapon taking to there is the metal interest rate hook in paper , fore-end, all on self's own, station position is hit by, and is lure a bull to initiate impingement to self.

长矛手完成任务后，由花镖手徒步上场，手执一对木杆制、饰以花色羽毛或纸、前端带有金属利钩的花镖，孤身一人站立场中，并引逗公牛向自己发起冲击。

In order to reducing the cogging torque of PM brushless direct current machines,an analytical method,which was based on energy method and Fourier expansion,was proposed,which can express how to match slot and pole to reduce cogging torque.

为了削弱永磁无刷直流电动机的齿槽转矩，首先利用能量法和傅里叶分解法进行分析并提出了减小齿槽转矩的最佳极槽配合。

Everyone on the Fram was ready to go to the North Pole, to the Arctic.

弗雷门号上的每个人全都准备就绪，去北极圈，去北极。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！