本文研究了用化学分离法测定铁矿石中磁铁矿的方案。
The analytical scheme of magnetite in iron ores by means of the chemical separation has been investigated.
介绍了磁铁矿的矿石性质、分离浮选的试验研究结果。
The ore properties and the experimental research of flotation of a magnetite ore are described.
包括芭比娃娃配件和玩具车架子脱落问题。人们担心玩具中的含铅涂料将对儿童造成损害,可分离的磁铁也会被儿童吞下。
Products including Barbie doll accessories and toy cars were pulled off shelves because of concerns about lead paint or tiny detachable magnets that could be swallowed.
包括芭比娃娃配件和玩具车架子脱落问题。人们担心玩具中的含铅涂料将对儿童造成损害,可分离的磁铁也会被儿童吞下。
Products including Barbie doll accessories and toy cars were pulled off shelves because of concerns about lead paint or tiny detachable magnets that could be swallowed.
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