... indigo sapphire 深蓝色蓝宝石 industrial diamonds 工业用钻石,工业金刚石 Inverell sapphire 因弗雷尔蓝宝石 ...
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... indigo sapphire 深蓝色蓝宝石 industrial diamonds 工业用钻石,工业金刚石 Inverell sapphire 因弗雷尔蓝宝石 ...
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nixon industrial diamonds ltd 区域 ; 英国进口商
Synthetic Industrial Diamonds 综合性工业钻石
industrial l diamonds 工业用钻石
They are in a great need of industrial diamonds.
他们需要大量的工业用金刚石。
Diamonds are useful as an industrial material as well as gem stones, and they would have many more applications if they could be made cheaply.
这是一个重要的问题。和宝石一样,作为工业原料的钻石很有用,而且如果他们价格便宜一些的话会有更多的用处。
Diamonds are useful as an industrial material as well as gem stones, and they would have many more applications if they could be made cheaply.
和宝石一样,作为工业原料的钻石很有用,而且如果他们价格便宜一些的话会有更多的用处。
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