hard pan是什么意思_hard pan的用法_翻译_读音

- 硬盘层,硬土,硬盘
英英释义
名词 hardpan:

crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
临近单词

Hardek hard hard X - ray hard-cutting hardface layer hard-working hard rock mine hard grineling hard metal bit hard radiation hard rock roof hard anodizing