girdle facet 中文意思是什麼
girdle facet
解釋
腰棱翻光面-
The horizontally projected distance from the point of the star facet to the edge of the table, relative to the distance between the table edge and the girdle edge
橫排推算距離點的天星小面的邊緣上表相對地之間的距離表邊緣和肩帶邊緣
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