类别:书籍:结构工程
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- ↑ https://books.google.com/books?id=YJoSY5QT6LYC&pg=PA133&lpg=PA133&dq=%22e.h.+brown%22+molding+materials+-facebook&source=bl&ots=XFZqHCjI9W&sig=ACfU3U0z7L1NpqrSK5-fy-2wpSuy949_xA&hl=en&sa=X&ved=2ahUKEwiys8eDxLfkAhULbawKHSYzDdMQ6AEwCnoECAkQAQ#v=onepage&q=%22e.h.%20brown%22%20molding%20materials%20-facebook&f=false
- ↑ https://books.google.com/books?id=YJoSY5QT6LYC&pg=PA133&lpg=PA133&dq=%22e.h.+brown%22+molding+materials+-facebook&source=bl&ots=XFZqHCjI9W&sig=ACfU3U0z7L1NpqrSK5-fy-2wpSuy949_xA&hl=en&sa=X&ved=2ahUKEwiys8eDxLfkAhULbawKHSYzDdMQ6AEwCnoECAkQAQ#v=onepage&q=%22e.h.%20brown%22+molding%20materials%20-facebook&f=false