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caliche是什么意思

caliche

美[kə'liːtʃiː]  英[kə'liːtʃiː]
n.  生硝
  近义词:hardpan,

英英释义

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