常见例句雙語例句Major volcanic rock types of Carboniferous times are andesitic basalt, dacite, rhyolite, characterized by a bimodal volcanic suite.石炭紀火山巖主要爲安山玄武巖和英安巖、流紋巖類，略具雙峰式火山巖特點。 返回 andesitic basalt