拿一只碗，在上面放个普通的筛子，或是用手磨(mo)(译注二：又称食物研磨器)，跟筒筛有一样的效果。
An ordinary sieve placed over a bowl or a food mill can take the place of a.
干分段杯研磨机，在直角磨机使用，但磨水泥，砖，块石和所有类型。
Dry segmented cup grinders, used on right-angle grinders, they grind all types of concrete, masonry, brick, block and stone.
分析了磁力研磨加工过程中单个磁性磨粒的受力状况和磨削机理，论述了磁性磨粒的性能要求和制备工艺。
The stress and grinding mechanism of a single magnetic abrasive grain in the magnetic abrasive finishing are analyzed. The required properties and preparation technologies of MAGS are discussed.
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