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发表于 2014-10-13 17:07
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来自: 马来西亚
前者包括后者,是上位概念,后者是前者的一种。后者是第4种功能。
Dampers may be classified according their functional tasks in the ventilation system:
•adjustment
•closing, running
•closing, smoke
•closing, fire
•overpressure
•modulating
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