They have good hygiene. Wear clean clothes, brush your teeth, and take showers.
他们有良好的卫生习惯。穿干净的衣服，刷牙和洗澡。
Wear clean clothes, brush your teeth, and take showers.
穿干净的衣服，刷牙和洗澡。
The wear volume loss of positive brush is more than that of negative brush.
复合材料的电磨损体积与电刷的极性有关，正刷的磨损体积大于负刷的磨损体积；
The wear volume loss of positive brush is more than that of negative brush.
复合材料的电磨损体积与电刷的极性有关，正刷的磨损体积大于负刷的磨损体积；
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