音标: 英 [ʃist]
1. Still working on the cloth, but the powder is a mix of potassium nitrate and finely ground shale, specifically, mediumrade metamorphic schist interleaved with quartz.
布料还在分析中 但粉末是 硝酸钾和细磨页岩的混合物 更确切地说 是中等粒径岩相变质的片岩 与石英交错的物质
