俗称磨头机；电磨；电动砂轮机，用砂轮或磨盘进行砂磨的电动工具。
它是用于输送水和利用水电磨粒和作物。
It is used to transport water and to make use of hydropower to grind grains and crops.
本发明公开了一种具有自动吸尘功能的手电磨机。
The invention discloses a manual electric grinder with automatic cleaning function.
研究了在电磨损条件下，压力变化对复合材料磨损性能的影响。
It is conclded that under conditions of pure mechanical and electrical wear, the wear loss of composites increases linearly with wear time.
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