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1.A bottom feeder is someone who does what many peo-ple do not want to do.
最下层工作的人，就是做些许多人不愿做的事。收藏指正
2.Paddle feeder is used in bottom-gapped coalbunker in coal-fired power plant to feed coal onto the belt conveyor in fixed quantity continuously and evenly with the rotation of the paddle and traveling of the machine.
叶轮给煤机用于火力电站缝式煤沟，通过叶轮的旋转和车体的纵向移动，把原煤定量、均匀、连续地拨到输煤带上。收藏指正
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