Brilliant cuts have requisite proportions that would see high weight loss; nevertheless, the fancy cuts are much more pliant in this view. The cutters can at times choose lesser proportions and symmetry, to debar inclusions or to conserve carat weight. The per-carat cost of diamond is much ...
a企业成本控制现状分析与对策研究 Enterprise cost control present situation analysis and countermeasure research [translate] aBut if the failure is too much,there will be no start ever But if the failure is too much, there will be no start ever [translate] awin a narrow victory 赢取一次险胜 [...
Every steel has some relative toughness and edge retention, and we would like to have the maximum combination of both. In general, more carbide means lower toughness but higher edge retention. The carbide hardness doesn’t matter much for toughness. But harder carbides lead to better edge retent...
71,72]. A Nd–Fe–B magnet can lift 1300 times its own mass. On a volume scale, we need about 18 times as much ceramic magnet material for an equivalent magnet strength. The composition