Vibration bowl feeder is a most popular parts-feeding device, it has direct influence on the cost and the reliability of the automatic product system.
振动料斗是使用最广泛的送料装置，对自动生产系统的成本及可靠性有着直接的影响。
Contrast experiments between gravity feeding and direct expansion refrigeration system were carried on, performance characteristics difference of the two refrigeration systems were found out.
并与直接膨胀供液制冷系统做同工况下的对比实验，分析两种系统的工作特性差异。
Contrast experiments between gravity feeding and direct expansion refrigeration system were carried on, performance characteristics difference of the two refrigeration systems were found out.
并与直接膨胀供液制冷系统做同工况下的对比实验，分析两种系统的工作特性差异。
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