To solve the problem of coal-rock damage during cutting coal and rock by diamond saw blade — the LS-DYNA diamond saw blade — coal and rock finite element model is established. According to the ...

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如今，市场上的大多数消费者选择圆形明亮式切工钻石，都是为了迎合现代人的审美观念。 这些闪闪发光的宝石凝聚着六个多世纪以来，一代又一代技艺高超的切工人才的集体智慧。 由于钻石切工逐渐演变成现在的 57 或 58 个刻面圆形明亮式，其风格也经过了 ...