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.
磁铁矿和石英的混合矿样采用磁选分离。
The mixture of magnetite and quartz was separated by magnetic separation.
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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