wayboard

名词 n.
中文释义

英文释义

名词 n.
  1. A thin layer or band of rock that separates or defines the boundaries of thicker strata.
    — In the Mill Close Mine, a very rich and extensive flat occurred under a way-board which was topped with a tiny coal seam 1 in. thick or so, the way-board itself being from 1 to 3 ft. thick, and looking very much like an […]

词形变化

wayboards plural way-board alternative way board alternative weighboard alternative
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