... boulder fall 石坠;砾石崩落 boulder fence 防石栏 boulder 巨砾;砾石;散石 ...
基于308个网页-相关网页
... rock crushing 压碎岩石 rock fall fence 防石栏;防坠石围栏;防石围墙 roof re-surfacing 天台重铺工程 ...
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... boulder fall 砾石下坠;砾石泻坠 fence 防石栏 bouldery colluvium 砾石崩积物 ...
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