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.
最普通的精加工工序是用机械的方法，如研磨，磨削或用磨料。
The most common finishing operations are mechanical, such as milling, grinding, or polishing with abrasives.
最普通的精加工工序是用机械的方法，如研磨，磨削或用磨料。
The most common finishing operations are mechanical, such as milling, grinding, or polishing with abrasives.
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