单词：caliche
音标：[kɑ:'li:tʃi] ；
[化] 生硝; 智利硝
n. crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
n. nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru
n. nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru
词型变化：名词复数形式 : caliches
词性分布：
【近义词】
- hardpan硬质地层