coal brass煤层: coal rake; coal seam; coal b ...中: hit; fit exactly黄铁矿: pyrite结核: tuberculosis; consumption; p ...黄铁矿结核: cat face; catface; coal blende; pyrite nodule下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:煤层中黄铁矿结核，即可在微信中查询翻译
