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钐1
释义
钐1(1)釤shān(2)稀土族的一种淡灰色发亮的金属元素,尤其和铈、钇以及钕相结合存在于稀土矿物中,在红棕色化合物中是两价的,在淡黄色化合物中是三价的 [samarium]――元素符号Sm 另见shàn
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normal propagation
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normal saline solution
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