每日翻译英译汉3.1? the moisture insulation layer shall be on heat insulation layer, no local dropping and bump hump are allowed, the surface shall be flat. thickness meets the requirement of specifications. 金属保护层应压边,搭接缝避开雨水冲刷方向,不允许有局部脱壳和凹凸不平,表面平整度符合规范要求。 查看更多