只有地下室窗户上的鼓风机不停地发出呼呼声。
Only the venliator in the cellar window kept up a cealess rattle.
技术方面质昌风机公司累积理论基础与可靠的实验数据，在风洞实验室的长期运作中，累积超过1000笔的风机与鼓风机详细资料。
The technical aspects of CHC cumulative theoretical basis and reliable experimental data, in the long-term operation of the wind tunnel laboratory, accumulating over 1000 pens detail data.
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