The finishing is superb, but the polished surface gets dirty in a second and is hard to get it clean again…
2
相比起陶器，瓷器显得更白，而且它们还有一层更加光滑的抛光面。
Things made of porcelain are usually whiter and have a smoother finish than earthenware .
3
从岩石的矿物组成、结构和抛光工艺及参数等方面对石材抛光面光泽度不均匀问题进行了剖析。
The inhomogeneous glossiness of stone polishing surface result from these factors such as mineral compositions, petrological structure and polishing process or process parameters has been analysed.
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