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- An idea of design is provided for asynchronous m otor of variable frequency variable speed in this paper mainly. 本文主要为变频调速异步电动机的设计提供一条思路。
- Extrusion System: frequency variable motor, cycloidal-pin gear speed reducer and high qualitynitrifiedfeed cylinder screw. 挤出系统：变频调速电机、摆线针轮减速箱加优质氮化料筒罗杆。
- Plasticating system: frequency variable motor, hard tooth-face speed reducer and high quality nitrified feed cylinder screw. 塑化系统：变频调速电机.;，硬齿面减速箱加优质氮化料筒罗杆。
- Frequency variable control system is used for a stepless speed regulation so that the coal delivery is set at a continuous and even flow rate. 采用变频控制系统，实现无级调速，能连续均匀地调整给煤量。
- And using the frequency variable adjusting speed technique to control the speed of benzole cooling pump automatically, to achieve the temperature stability of the benzole. 同时利用变频调速自动控制粗苯冷却泵的转速,实现粗苯温度的稳定。
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- Low frequency variability of sea surface level in the tropical Atlantic Ocean derived from TOPEX/POSEIDON altimeter data 用TOPEX/POSEIDON高度计数据分析热带大西洋海面高度距平的低频变化
- variable frequency variable speed 变频调速
- frequency variable adjusting speed 变频调速
- frequency variable speed regulation 变频调速
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- straight-line frequency variable condenser 直线频率式可变电容器
- Variable frequency variable speed system 变频调速系统
- constant frequency variable dot method 固定频率变点法
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- explosion - proof variable frequency variable speed 防爆变频调速
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- variable frequency variable speed drive system 变频调速系统
- variable frequency variable speed(VFVS) 变频调速
