| 1. | Coefficient of travel speed variation
行程速度变化系数 |
| 2. | Speed variation of each roll by means of two potentiometers on the control cabinet
控制面板上两个旋钮直接控制辊速度。 |
| 3. | These sensors establish ignition and fuel injection timing , and monitor crankshaft speed variation
这些传感器（的信号）来对点火、燃油喷射定时和曲轴速度变化监控。 |
| 4. | 3 . automatic counting for feeding length , infinite speed variation , coating and lamination can be completed at one time
3走料长度自动计数，变频无级调速，涂布复合一次完成。 |
| 5. | Comparing the real electromagnetism torque and the ideal electromagnetism torque , we can find the trend of the speed variation , and then we can control the motor properly
实际电磁转矩与理想电磁转矩相比较，即可得到电机转速的变化趋势。 |
| 6. | Yct series eddy - current coupling drives are ac speed - regulation motors , which are featured by easy contorl and stepless speed variation within a wide speed range
Yct系列电磁调速电动机由拖动电机、电磁转差离合器、测验速发电机和电磁调速控制器组成。 |
| 7. | This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation , at the same time the results are given
本文对双极性调制的无刷直流电动机仿真分析了转速和调制频率对转矩影响同时给出仿真结果。 |
| 8. | In the recent 20 years , with the appearance of the new power electron apparatus and microprocessor and the development of the control theory on the alternating current ( ac ) motor , the technology of variable frequency speed variation has improved rapidly
近20年来，随着新的电力电子器件和微处理器的推出以及交流电机控制理论的发展，交流变频调速技术取得了巨大的技术进步。 |
| 9. | The variation of regional stress field can be genetically interpreted by the rotation speed variation of the earth and its impact on the movement of lithosphere plate and deep processes of the earth , it is also related to the earlier structural feature and boundary of the basin
区域应力场变化可以用地球自转速度变化引起的岩石圈板块活动及触发的深部过程来解释，亦与先期构造形迹和盆地边界条件有关。 |
| 10. | This thesis introduces the base theory and correlative information of variable frequency speed variation , and expatiates sinusoidal pulse width modulation ( spwm ) . the principle of svpwm is in - depth discussed , and a simple algorithm for svpwm is ratiocinated
本文介绍了交流变频调速的发展概况，分析了其基本原理，阐述了正弦脉宽调制( spwm )原理，对svpwm理论进行了研究，给出了svpwm的简单实现算法。 |
