created sense approved 伪顶/偽頂 · wěidǐng · false roof — "Initial import from upstream dictionary"
伪顶 / 偽頂
wěidǐng
false roof
a thin layer of rock in a coal mine that sits immediately above the coal seam and collapses easily when the coal is removed
伪 (literal) → 伪/偽 · wěi · false 顶 (literal) → 顶/頂 · dǐng · top
Changed: simplified, traditional, gloss, definition, pinyin, variant pinyin, variants, separable parts, decomposition