- 平面磨
- 平面石磨
- flat: adj. (flatter; flattest) 1.平 ...
- stone mill: 1.碎石机，磨石机。 2.石粉工场。
- flat-stone mill: 平面磨
- mill stone: 磨石；粉碎器；重担 (between the upper and the nether millstones 陷在苦境。hard as the nether mill-stone 残酷。millstone grit 【地质学；地理学】磨石硬沙岩。see [look] through [into, far into] a millstone 感觉(尤指眼光)十分锐利。weep millstones 〔口语〕决不哭；毫不伤心)。
- artificial mill-stone: 金刚砂磨石
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