The Netherlands boasts some fine jewellery schools, but, other than diamond-cutting, there is little historical tradition in jewellery making.

虽然荷兰拥有一批引以自豪的高级首饰学校，但是在首饰制作(不包括钻石切割)上几乎没有历史传统。

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The bit is usually a drag bit fitted with either PDC or natural diamond cutting structures, but the core bit is unusual in that it has a hole in its center.

钻头通常属于刮刀型，装备有PDC或者天然金刚石切削齿，但取芯钻头的特别之处在于钻头中心有一孔。

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Some successful concrete cutting projects by using diamond tools are presented and the research status at home and abroad about diamond cutting concrete are summarized.

介绍了各种不同场合成功应用金刚石工具切割混凝土的典型实例，对金刚石工具切割混凝土的研究现状进行了概述。

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Antwerp, the city known as the world's diamond-cutting capital, lies only about 25 miles away from Brussels.

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The shape of the stone, likely dating back to the later 16th century, is a product of "diamond-cutting in its infancy, " he says.

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But even with rose-diamond composite augmented optics, we have to admit that once cutting-edge graphics are now past their prime.

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