multiformat changing device 多幅幻灯片变换装置
Roll changing device 换辊装置 ; 换辊机构
position changing device [科技] 位置变换装置
tap changing device 抽头切换开关 ; [电] 抽头转换开关 ; 抽头转换装置
Cone speed changing device 铁炮变速装置
Amplitude changing device 变幅机构
star-delta changing device 星角切换装置
tape changing device 抽头转换开关
The utility model relates to a deep vein puncture needle changing device.
本实用新型涉及一种深静脉穿刺换针器。
The utility model relates to a changing device for a door shaft of a refrigerator door.
本实用新型涉及一种电冰箱箱门门轴转换装置。
The Wrapping machine is unique in the market with its patented Automatic Roller Changing device.
这个缠绕机因为具有专利的自动膜卷更换装置而是世界上独一无二的。
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