The ball is doing a reciprocating movement.

那个球在做往复移动.

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Magnetic field is supplied by an electromagnet . Reciprocating movement and Brayton magnetic refrigeration cycle are adopted.

此系统利用电磁体提供磁场,采用往复运动方式,实现布雷顿循环.

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Cross - Lapping Machine in nonwoven process makes reciprocating movement which motion with rotary motion during lapping web.

非织造布生产中使用的机械铺网机,在铺网过程中作往复运动,该运动是平动与转动复合的运动.

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