查看会员资料
用 户 名：kha***
发送消息- Email：用户隐藏
- Icq/MSN：
- 电话号码：
- Homepage：
- 会员简介：
最新会员发布资源
PERMANENT-MAGNET-MOTORS
- PERMANENT MAGNET MOTORS In DC motors of 0.1 horsepower (74.60 watts) or less, a permanent magnet field is most useful. Comparing motors below 1.25" in diameter, permanent magnet motors run cooler than wound field types because no power is exp