The air conditioning handing units used double fan, it found the the total volume is not the superimposed volume of the two fans. it was provide a reference for future design.
2
刚才大家欣赏的是舞蹈〈踏歌起舞〉，下面请欣赏古筝双奏〈战台风〉。
After a beautiful dance, let's enjoy wonderful music played by Chinese zither.
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