
En 991 Determination Of The Dimensions Of Prefabricated Reinforced Components Made Of Autoclaved Aerated Concrete Or Lightweight Aggregate Concrete With Open Structure
出版:British Standards Institution

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En 991 Determination Of The Dimensions Of Prefabricated Reinforced Components Made Of Autoclaved Aerated Concrete Or Lightweight Aggregate Concrete With Open Structure
出版:British Standards Institution
专家解读视频