crown angle 中文意思是什麼
crown angle
解釋
簾線沿輪緣布置的角度-
The diamond cut ratios, such as girdle diameter, total depth, pavilion depth, pavilion angle, crown depth, crown angle, table size, girdle depth and the other related symmetry parameters, can be calculated with those key corners
該系統可用於成品鉆石的切工分級、鉆石加工過程的質量檢驗以及作為鉆石銷售環節中的促銷手段。
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