caliche中文什么意思

n.
1.【化学】生硝；智利硝。
2.(土壤的)钙质层。

• caliche layer:    钙聚层
• caliche nodule:    钙质结核
• dolomitic caliche:    白云石质钙结岩

英文释义

名词

1. nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru
2. crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
   同义词：hardpan