Primary violarite has comparatively big particle size,and it is considered the easiest flotation copper-niekle-sulphide ore.
紫
镍铁矿
粒

,被认为是最易浮选的
化铜镍矿物。
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题精听 More research is needed to confirm the findings, but the scientists think that eating dark chocolate, especially in combination with prebiotic carbohydrates found in foods such as raw garlic and cooked whole wheat, can really improve human health.
我们需要更多
调查来证实这个发现。但科学家认为,食用黑巧克力,特别是和着含有原生态碳
化合物
食物,例如生蒜和煮熟
全麦,确实能够提高人类
健康。
题精听