传统的方法是外置,例如串级(cascade control)、双馈(double Feed)等调速。外置电源将使系统复杂化,而且在低同步调速时造成从定子至外置电源之间的无谓循环,增大了定子损耗。
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double feed machine 双系统针织机
double feed automatic hosiery machine 双成圈自动织袜机
double feed a synchronous 双馈异步
double feed machellone 双系统针织机
double-feed 双馈
double feed automatic hosiery machellone 双成圈自动织袜机
double feed HM 双给介质
double feed motor 双馈电动机
Double feed systems work well if the grid voltage and frequency is very stable.
当网格电压和频率很稳定时,双馈系统工作的很好。
The World Health Organisation has predicted that meat consumption will double by 2050, and the increasing cost of animal feed is likely to rapidly inflate the price of meat before then.
世界卫生组织已经预测,肉类消耗在2050年将会翻倍,而且随着动物饲料成本越来越高,很可能在那到来之前肉类价格飞速上涨。
The most complicated thing in the whole design is the feed system, which includes several parts to avoid double and even triple feed with the extremely long projectiles.
在整个设计中最复杂的事情是进料系统,其中包括几个部分,以避免重复,甚至极长的射三重饲料。
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