2楼
key words:
specification for sheet metal ductwork
low,medium and high velocity air systems
the industry standard
published by 1998
it's really a great book,thanks!
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3楼
记得好像是英国的专业规范？
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4楼
嗯，听说过，美国的好像是SMACNA ?
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5楼
I've no idea~~
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6楼
英国的专业规范
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7楼
谢谢楼梯，no 楼主
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