·2,447,543篇论文数据，部分数据来源于NoteExpress
This paper describes a device of cable reel which is driven by computer controlled frequency-changing motor whose velocity can be regulated.
介绍了一种以微机控制变频调速电机驱动电缆卷筒的装置。
youdao
应用推荐
模块上移
模块下移
不移动