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First, the dissertation summarizes the properties, developing state and application fields of BLDCM, then its fundmental structure; operation principle and control strategy is also presented. On the base of roundly analyzing all kinds of the drive motor in electromotion type railway switch, BLDCM is proposed to replace the formerly traditional DC motor in railway switch. Second, the whole design scheme and key technology of control system is put forward based on analyse of the technical parameters and requirements.

首先，论文介绍了无刷直流电动机的特点、发展和应用概况，分析了稀土永磁无刷直流电机系统的基本构成、工作原理和控制方法；在对目前各种电动转辙机驱动电机分析的基础上，提出将稀土永磁无刷直流电机用于铁路转辙机，以替换原有的串励有刷直流电动机。

Musical shoe sole contains respectively printed circuit board, batteries volume adjuster and small-sized loudhailer, in shoe all around bend cant still is installing 4 key board switch, ordinal the key that steps on next shoes, can give out ""," come "," rice "," law " noise of enharmonic accord with, children puts on it, when stepping on next key board switch by dance music score, can enjoy the performance of festively singing and dancing.

音乐鞋鞋底分别装有印刷电路板、电池音量调节器与小型扬声器，在鞋子四面倾斜面还安装着四个琴键开关，依次踩下鞋的琴键，便可发出"都"、"来"、"米"、"法"等音符声响，儿童穿上它，按舞曲乐谱踩下琴键开关时，便可欣赏到载歌载舞的表演。

The invention discloses a double-temperature double-chamber light wave sterilizing cabinet, which comprises the following parts: box, low-temperature chamber and high-temperature chamber in the box and control device, wherein the upper baffle rack is set in the low-temperature chamber, one lower baffle rack is set in the high-temperature chamber, the screen and keyboard are set on the box, the low-temperature chamber possesses first door with drawer switch and the high-temperature chamber possesses second door with drawer switch, the knife and fork rack is set on the bottom of first door, whose extending direction is vertical the door, the rotary lamp rack of ultraviolet tube is set in the low-temperature chamber, the light wave generating device is set in the high-temperature to emit light wave.

一种双温双室光波消毒柜，包括一箱体、设置在箱体内的低温室和高温室、控制装置，该低温室中设有一上隔物架，该高温室中设有一下隔物架，在箱体的上部依次设有显示屏、按键；该低温室具有抽屉式开关的第一门体，该高温室具有抽屉式开关的第二门体；在第一门体的底部设有一拉伸方向与门体拉伸方向垂直的、可以从左右两侧拉出的刀叉架；在该低温室内设有一设置有紫外线灯管的旋转灯架，在该高温室内设有一用于发射光波的光波发生装置。本发明消毒柜，使用范围广泛，功能齐全，消毒效果好。

Therefore, when the RESET switch can not be easily pressed, we must be carefully examined, it is best to replace the RESET button on the new switch or button on the external chassis lubrication for fuel processing.

所以，当RESET开关不能按动自如时，我们一定要仔细检查，最好更换新的RESET按钮开关或对机箱的外部按钮进行加油润滑处理。

The red dot on the "rocker arm" dip switch is depressed down to turn on (1) the switch position.

这个红点就"摇臂" dip开关是压抑下来，把对（ 1 ）开关的位置。

The implementation of on-line monitoring of oil-dissolved gas for transformer tap changing switch contributes to correctly judge the faulty condition and extending trend of tap changing switch, to reduce the maintenance cost of tap changing switch as well as to improve the operational security and reliability of transformer.

对变压器分接开关实施油中溶解气体的在线监测，有助于正确判断分接开关的故障状态和发展趋势，降低分接开关的维护成本，并提高变压器运行的安全性和可靠性。

Musical shoe sole contains respectively printed circuit board, batteries volume adjuster and small-sized loudhailer, in shoe all around bend cant still is installing 4 key board switch, ordinal the key that steps on next shoes, can give out ""," come "," rice "," law " noise of enharmonic accord with, children puts on it, when stepping on next key board switch by dance music score, can enjoy the performance of festively singing and dancing.

音乐鞋鞋底分别装有印刷电路板、电池音量调节器与小型扬声器，在鞋子四面倾斜面还安装着四个琴键开关，依次踩下鞋的琴键，便可发出&都&、&来&、&米&、&法&等音符声响，儿童穿上它，按舞曲乐谱踩下琴键开关时，便可欣赏到载歌载舞的表演。

With a small thin-bladed screwdriver, g tly pry the snap clips at the top and bottom of the rear window defogger switch receptacle on the back of the accessory switch bezel and pull the switch out of the bezel.

用一个薄的片状螺丝起子，轻轻地撬开在附件开关玻璃框背面的后窗除雾器开关插座的上部和下部的铆钉头夹环，并拔出开关。

On the pole inscribes the gap,through the switch lever and the signal rod mutual position's change,simulates the rail switch and semaphore's different condition,realizes between the rail switch and semaphore's interconnection.

杆上刻有缺口，通过转辙杆和信号杆相互位置的变化，来模拟道岔和信号机的不同状态，实现道岔和信号机之间的联锁。

The electricity locks the interconnection separately supposes the electricity on the rail switch and the signal handle to lock,the electricity locks on has the contact separately on behalf of the rail switch and the signal position.

电锁器联锁分别在道岔和信号握柄上设电锁器，电锁器上有接点分别代表道岔和信号位置。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。