terra alba

详细解释:【医】 白土(通常指白陶土,有时指石膏、枯矾、氧化镁、硫酸钡)

英语解释：

名词 terra alba:

finely pulverized gypsum used especially as a pigmentfine white clay used in making tobacco pipes and pottery and in whitening leather同义词：pipeclay