... 碳质沉积 carbonaceous sediment 碳杂质、碳沉积物 carbon deposit 被碳沉积盖覆的 coated ...
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氮化硼产品不含碳杂质,其纯度可达98% 以上。
The boron nitride product contains no carbon impurity, and the purity thereof reaches more than 98%.
这些使用碳或筛网来过滤杂质。
贝塞麦炼钢法:吹入压缩空气通过熔融的钢铁以燃尽多余的碳和杂质的一种炼钢方法。
Bessemer process: a method for making steel by blasting compressed air through molten iron to burn out excess carbon and impurities.
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