sand and gravel overlay_农牧林英汉词典
sand and gravel overlay
[农牧林英汉词典]
sand and gravel overlayn.沙砾覆盖层
是什么意思，sand and gravel overlay的解释，sand and gravel overlay的翻译
n.沙砾覆盖层
sand and gravel overlay_农牧林英汉词典sand and gravel overlay
[农牧林英汉词典]
sand and gravel overlay是什么意思，sand and gravel overlay的解释，sand and gravel overlay的翻译
