5 【中文名称】化工石灰岩【英文名称】chemical limestone 【密度】2.5～2.8【性状】石灰岩一般呈致密块状产出，颜色常为灰白、浅灰、灰色、深灰及浅黄、浅红等。纯石灰岩呈青灰色、断口浅灰色。【溶解情况】能溶于有二氧
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The second set consisted of patina ― a chemical film encrustation on one of the limestone boxes.
第二套样本中包含有铜绿――在一个石灰石盒子上附着的一种化学物质。
Using quartz sand, limestone, dolomite and other natural mineral as the main raw material, with some soda, borax etc chemical raw materials melting into glass.
采用石英砂、石灰石、白云石等天然矿石为主要原料，配合一些纯碱、硼砂等化工原料熔成玻璃。
Using quartz sand, limestone, dolomite and other natural mineral as the main raw material, cooperate with some soda, borax etc chemical raw materials melting into glass.
采用石英砂、石灰石、白云石等天然矿石为主要原料，配合一些纯碱、硼砂等化工原料熔成玻璃。
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