canned rack and pinion drive
bearing bearing of pile
桩的承载力
聚对苯二甲酸乙二醇酯(PET)
聚对苯二甲酸乙二醇酯
(+)USB GDP General Drive Procedare
4-wheel drive electric vehicle
a major tree planting drive
absorber rod drive servicing
AC (alternating current) electric drive
AC adjustable-speed drive system
AC drive
交流传动
直流调速
交流变频器
交流驱动
交流调速
交流激励
交流电气传动
变频调速
变频