单词pumiceous
adj.: 浮石的；轻石质的网络: 轻石的；浮石状的；浮石质凝灰岩
浮石的,像轻石的;轻石质的
Characteristics of Pumiceous Basalt and Its Application Prospects to Water Disposing
泡沫玄武岩特性及其在水处理中应用前景