板石也称为板岩，是一种可上溯到奥陶纪（5.5亿年前）的沉积源变质岩。主要由石英、绢云母和绿泥石族矿物组成。其主要化学成分是二氧化硅，劈分性能好、平整度好、色差小、黑度高（其他颜色同理）、弯曲强度高，加工后可用于制造屋面瓦板，石板瓦等。
双语例句原声例句
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熔化的金属溢流到外面的板石上。
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目前已探明的矿藏有板石、高岭土、白云石、铁矿石等。
At present, there are proven reserves Slate, kaolin, dolomite, iron ore and so on.
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大量提供各种天然板石、文化石、古典岩、机制卵石等。
Supply natural slate, cultural stone, classical stone, Machine-made Cobble Stone Etc.
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It actually takes several chapters to reach a resolution, and God pouts for quite a while, but a renewal of the covenant does occur, and another set of stone tablets is given, and according to one rabbinic text the broken tablets, as well as the new tablets, are both placed in the ark .
有很多章节描述了达成解决方案，上帝生气了很久，但是更新的契约出现了,上帝给了另一块石法板，一部犹太教义的文本显示，破碎的石法板，和新的石法板，都放在藏经柜中。
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$firstVoiceSent
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