As beautiful bright Nordic scenery, always so pure, without a trace of impurity, such a wardrobe, taking inspiration from northern coastal storm season.
如清丽明艳的北欧胜景，总是那么纯净、不含一丝杂质，这样的一款衣柜，灵感正来自于北欧海滨的风雪季节。
Chemical products often need coned of their trace iron contents as impurity.
化工产品大多需控制其痕量杂质铁含量。
Determining trace impurity element of the standard europium oxide by the standard addition method. So the errors owing to neglecting the impurity in the standard are eliminated.
用标准加入法测出氧化铕基准中的微量杂质元素，消除了由于忽略基准中的杂质元素的含量给分析测定带来的误差。
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