Electroplating diamond-impregnated wheel is nondeformable, well anastomotic and pure. It's the best finish machining tool for marble or glass.
电刚石磨轮具有磨削形状不变形,吻标准,光洁度好等特点。是大石、玻的深加工工具。
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They turned to Antarctica because, not only was it reached only 200 years ago, but it also supports a variety of processes, including glacial erosion, frost cleaving and river transport, which might batter rocks into tool-like shapes.
他们转向南极洲, 因为它不仅在 200 年前才到达,而且还支持多种过程,包括冰川侵蚀、霜裂和河流运输,这些过程可能会将岩石类似的形状。