clarain

亮煤

词形变化

clarains 复数 clarains

释义与例句

n.
  1. 1.

    A form of coal having stratifications parallel to the bedding plane.

    可数 不可数

词源

From Latin clārus + French -ain (“-ane”), after fusain. Coined by British birth control campaigner and paleontologist Marie Stopes in 1918.

来源：wiktionary