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Lead and selenium mainly exist in galena, clausthalite, and selenio-galena which occur as cell-filling of coal-forming plants and are of chemical-sedimentary origin.

主要赋存在中,这3种物以植物胞腔充填形式出现,属于化学沉积成因。

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英国学生科学读本

Minerals or stones, like galena, which contain useful metals, are known as ores.

像方铅这样, 含着有用的金属的头, 我们叫它“”, 英语是ore。

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Crash Course 天

As the thinking goes, at lower elevations, minerals like bismuthinite and galena would be vaporized by the heat.

照这种想法,在低海拔地区,像铋和方铅这样的物会被高温蒸发。

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Awesome Nature

Take galena, which has a cubic structure composed of lead and sulfur atoms.

以铅、硫原子组成 立方结构的硫化铅为例。

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excitontransition, excitonutrient, excitor, excitoreflex, excitory, excitosecretory, excitovasomotor, excitron, excl., exclaim,

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3G, 401(K), a,
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