点振源
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A monoaxial vibrating motor placed transversely on a sifter as a vibration source of a high speed sifter was developed in this paper.
提出将单轴振动电机横置于筛体上作为高速振动筛的振动源。
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A vibration source and a medium are needed to form a mechanical wave.
机械波的形成需要振源和介质。
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