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单词 θ6110
释义
the world > the earth > structure of the earth > constituent materials > earth or soil > [noun] > subsoil > hard subsoil (6)
pan1667

A hard and typically impermeable substratum of soil. Cf. hardpan, n. 1.

moor-band1800

a hard impervious subsoil of sand, clay, and stones, found in moorland areas.

hardpan1803

A hard, excessively compacted, often clayey, soil or subsoil; a layer of this. Also: hard unbroken ground. Also figurative.

moor-band pan1844

= moor-band n.

moor pan1846

= moor-band n.

ortstein1903

A hardpan; (now) spec. one cemented with iron and organic matter, usually in the B horizon of a podzol.

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更新时间:2025/1/30 16:33:43