
Specification For Masonry Units - Part 3: Aggregate Concrete Masonry Units (Dense And Light-Weight Aggregates) - National Addition To Nf En 771-3
出版:Association Francaise de Normalisation

專家解讀視頻
Specification For Masonry Units - Part 3: Aggregate Concrete Masonry Units (Dense And Light-Weight Aggregates) - National Addition To Nf En 771-3
出版:Association Francaise de Normalisation
專家解讀視頻