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1·Increasing core length properly can raise motor efficiency and power factor, but it will reduce locked-rotor torque ratio and breakdown torque ratio.

适当增加铁心长度可以有效提高电机效率和功率因数，但会导致启动转矩倍数和最大转矩倍数减小。

2·Thrust ratios between driving and driven pulleys at several different speed ratios were plotted with respect to torque ratio and compared with each other.

绘出了不同速比下主、从动带轮间相对于转矩比的推力比线图并作相互比较。

3·Brushless direct current motors and have advantages of good adjustment performance, high voltage, high torque, high volumes ratio in high performance drive.

无刷直流电动机在高性能驱动应用中具有良好的调整性能、高电压、高转矩、高体积比以及无电刷的优点。

4·Speed ratio is 1:5000, from low speed to high speed, all have steady torque characteristics.

调速比为1：50 00，从低速到高速都具有稳定的转矩特性。

5·More torque can be sent to the wheels in first gear than in fifth gear because first gear has a larger gear-ratio by which to multiply the torque.

一档变速传给车轮的转矩比五档传出的转矩大，因为一档变速有大的传动比，而大的降速比则加大了驱动力矩。

6·A new direct torque control (DTC) strategy based on duty ratio control technique of induction motor drives is presented.

文中提出了一种新的基于占空比控制技术的异步电机直接转矩控制方案。

7·High torque to weight ratio, high efficiency and wide speed range should be the qualities possessed of by the motor drive systems in Electric Vehicles.

电动汽车中的电机驱动系统应该具有高转矩重量比、高效率以及宽广调速范围等特点。

8·Applying discrete duty ratio control technology into direct torque control can reduce the ripple, and keep the feature of simplicity.

采用离散占空比控制技术的直接转矩控制能够在减小输出转矩脉动的同时保持算法简单的特性。

9·Finally, a solution to restraining the harmonic current and ripple torque is suggested, ie a larger modulation frequency ratio of 3k is to be adopted, as it is used in SPWM.

文中还提出了抑制谐波电流和脉动转矩的方法，如在SPWM生成中，采用较大的3的整数倍调制比。

10·The analysis indicates that tapping torque increases as net cutting time ratio increases, where net cutting time ratio influences the tapping torque more significantly.

结果表明，攻丝扭矩随净切削时间比的增加而增大，且对攻丝扭矩的影响最显著。