coarse-grained stone ; rough grinding stone
... Coarse grinding 粗磨 Coarse Grinding Stone 粗磨石 coarse grinding technology 剥皮 ...
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琢玉用的粗磨石 coarsewetstone ; coarse wetstone
中粗磨石 medium-grained grinding stone
磨石粗砂岩 millstone grit
铁矿石超粗磨 iron ore over coarse grinding
磨石还是有点粗，另外因为有些地方磨的方向不一致，导致反光较乱，剑尖磨得不错！
The abrader is a bit rough, and because some different directions in different places, it leads different glistening. Good polishing on tip!
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