理想 優質 非常好 好 鑽面 53-58% 53-60% 53-62% 52.5-66% 鑽冠角度 34.5 34-35.5 32-35.5 30-37 鑽腰 Thin - Slightly Thick Very Thin - Slightly Thick Very Thin - Thick Very Thin - Very Thick 深度 59-62.7% 58-63% 57-64.5% 56-65%
呵呵,各有所长,切工目前为止还没有一直公认的具体指标,只有大致范围
观赏中。。。。。。。
圍觀啊 圍觀