资料来源 : pyDict

矽藻土

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Bergmeal \Berg"meal\, n. [G. berg mountain + mehl meal.] (Min.)
   An earthy substance, resembling fine flour. It is composed of
   the shells of infusoria, and in Lapland and Sweden is
   sometimes eaten, mixed with flour or ground birch bark, in
   times of scarcity. This name is also given to a white powdery
   variety of calcite.