double speed meaning in Chinese

倍速复制
双速

What is the present situation of dvd - rw double speed
目前dvd - r的刻录倍速如何？
But in fact there will be a double speed increase
但是，事实上，这里有一个双重的速度增加。
Flameproof mining type double speed three - phase induction motors
矿用隔爆型双速三相异步电动机
Electric double speed motor
双速电机
Kinematics analysis and design method based on internet for multi - flow transmission system of double speed hoist
双速卷扬机减速器多流传动系统的运动学分析与网络化设计

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