查询词典 drive her car to school

The drive head consists mainly of the drive frames, drive units, including the electric motor, gearbox, fluid coupling, and chain sprockets.

使硬盘磁头主要驱动框架，驱动单位，包括电机，变速箱，液力偶合器，链条链轮。

It synthesizes the advantages of belt drive,chain drive and gear drive.

它综合了带转动、链转动和齿轮转动各自的优点。

Based on the working condition of the tractor, a new type of electric tractor drive system which combines a motor and a gear, and the evaluation index and the calculation method for dynamic performance of electric tractor are suggested; taking an electric tractor drive system as design object, the balance graph of drive-resistance force, climbable gradient under different shifts, and continuous working time are calculation analyzed.

根据电动拖拉机作业特点，提出了一种电动机和变速箱相结合的电动拖拉机传动系统结构方案，并给出了电动拖拉机动力性能和经济性能评价指标以及电驱动系统主要参数的设计计算方法，以基于串励直流电动机的某型号小四轮电动拖拉机电驱动系统为设计实例，计算分析了该电动拖拉机的驱动力-行驶阻力平衡图、不同挡位下的爬坡度以及连续作业时间。

Researches show that the drive force characteristics of the electric tractor drive system based on series DC motor is close the ideal characteristics, the curves are concave, low speed with constant power, and high speed with constant torque; the electric tractor has large working speed under different shifts, but the extensive coincidence speed shows that the variable ratio of the gear is unreasonable; the maximum climbable gradient of this electric tractor is more than 30%, and does not need frequent shift when working for its extensive climbable gradient; there are many influence factors of continuous working time, which the more obvious factors are working speed and working load, the working time increases with the increase of the working speed and working load.2. Simulation researches on the drive characteristic of the electric tractor.

研究结果表明：基于串励直流电动机(来源：ABC21论文网www.abclunwen.com)的电动拖拉机电驱动系统的驱动力特性场接近理想驱动力特性场，其各挡下的驱动力特性是一组下凹的曲线，低速恒转矩，高速恒功率；同一行驶速度下所对应高挡驱动力大于低挡驱动力，这是由电机的调速特性决定的；电动拖拉机各个挡位下具有较广的稳定作业速度范围，但是各个挡位之间速度重合的范围较多，说明所用变速箱变速比与电动机匹配不合理；电动拖拉机最大爬坡度达到30%以上，并且各挡爬坡度变化范围较广，作业过程中不需要频繁换挡；影响电动拖拉机连续作业时间的因素较多，其中作业行驶速度和作业负荷影响最为明显，作业负荷越大，连续作业时间就越短，作业速度越快，连续作业时间就越短。2、电动拖拉机驱动特性仿真研究。

By friction round shape of the different levels can be divided into cylindrical friction wheel drive, cylindrical trough friction wheel drive, three kinds of cone friction wheel drive.

按摩擦轮形状的不同，可分为圆柱平摩擦轮传动、圆柱槽摩擦轮传动、圆锥摩擦轮传动三种。

THe drive is small and come with great professional back up software .there is even a diaster recovery future:this future allow to recuper hard drive failure and allow boot from usb drive

建设规模小，也就有了很大的专业备份软件。还有一个更容灾未来：未来允许recuper硬盘故障，并允许开机的USB驱动

In the Drive box, click the drive letter that you want to use for the network drive.

在驱动器框中，单击要用于网络驱动器的驱动器号。

Americans like to do business without leaving their cars. Wherever you go, you'll see drive-in banks, drive-in restaurant, drive-in churches and driven-in movies.

他们喜欢在车子里干事情，不管你走到哪里，你会看到免下车银行，免下车餐馆，免下车的教堂和免下车电影院。

The drive is a removable storage device, such as a floppy disk drive or a USB flash drive.

此驱动器是一个可移动存储设备，如软盘驱动器或USB闪存驱动器。

The software works on any kind of medium, whether floppy disk, removable hard drive, zip drive or tape drive.

该软件工程对任何形式的媒介，无论是软盘，移动硬盘， ZIP驱动器或磁带驱动器。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。