n. rasion
刮锉 scaler file
刮锉甲鲶 Rineloricaria strigilata
整流子刮槽锉刀 commutator slotting file
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磨石、砂纸、指甲锉、花岗石面、混凝土墙面及地面等均含有以上物质，会刮花这些材料的表面。
Millstone, sandpaper, nail file, granite surface, concrete walls and floors above all contains material, will be scratched surface of these materials.
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