vermiculite / vərˈmɪk yəˌlaɪt /

⚽高中词汇蛭石蛭子朱砂

vermiculite 的定义

n. 名词 noun
  1. any of a group of platy minerals, hydrous silicates of aluminum, magnesium, and iron, that expand markedly on being heated: used in the expanded state for heat insulation and as a plant growth medium.