英语词汇“impenetrable layer”的读音、翻译、释义、用法及例句-智慧网

词汇	impenetrable layer
释义	impenetrable layerimpenetrable layer1.■不渗透层
随便看	backing space backing space technique backing stage backing storage backing store backing stores backing strap backing strip backing support backing tape backing texture backing turbine backing up backing up of sewage backing-up screw backing vessel backing weld backing welding backing welding electrode backing wind back injury back inlet gully back into back iron back issue

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