crustose

常见例句

Evidence of emergence including sabkha dolostone, algal mat, bird-eyes and fenestral structure, mudcracks and crustose limonite has been found in the top of the Changhsingian reefs in Ziyun, Guizhou province.
貴州紫雲長興期生物礁頂部存在的出露証據有：（1）形成於薩勃哈蒸發環境的白雲巖，（2）藻紋層沉積，（3）鳥眼和窗格搆造，（4）乾裂縫和褐鉄鑛風化殼，等等。
crustose lichen
殼狀地衣