神马av_日韩第一页_免费精品一区_神马AV_神马久久久久久久久_日韩无码第一页_色哒哒_无码人妻熟妇av又粗又_国产69久久久欧美黑人A片_日韩欧美亚洲_无码第一页_神马午夜精品91_无码人妻熟妇av又粗,日韩免费人妻无码专区蜜桃,亚洲阿大香蕉,欧美亚洲男人天堂,国产无码精品一区二区,揉着我的奶从后面进去视频,免费全部黄A片免费播放软件,国产色中色,免费看的久久久久,天美传媒部在线观看,久久久久久亚洲综合,大香蕉日韩成人在线视频,久久无码潮喷A片无码高潮动漫,精品久久亚洲熟女,国产欧美精品aaaaa久久,直男国产飞机杯,我的公把我弄高潮了视频,免费的精品一区二区三区片,国产日韩欧美三级,亚州A级片,自拍偷拍亚洲porn,少妇水多A片太爽了,日本久操,成人午夜福利无码不卡视频,国产一区二区不卡亚洲涩情,日韩欧美亚洲综合久久,国产亚洲精品久久孕妇呦呦你懂,国产又粗又长又大精品A片,自偷自拍亚洲综合精品第一页,亚洲欧美熟妇久久久久久久久 ,香蕉视频操逼奶子

　　Good fire performance of ventilation duct 1 in the power house: at present, the common problem is that the combustion performance and fire resistance limit of the finished ventilation duct have not been tested by the relevant departments, and the combustion performance and pipe wall thickness of some ventilation duct materials do not meet the requirements.

　　進(jìn)行應(yīng)用的廠房通風(fēng)管道，在很大的程度上其實(shí)也就是能直接的就減少地下室通風(fēng)上部空間占用以及其風(fēng)管用量。地下室通風(fēng)方式合理，就其在進(jìn)行布置的時(shí)候，排風(fēng)管及排風(fēng)口，平時(shí)排風(fēng)用，火災(zāi)的時(shí)候必然會(huì)兼作排煙風(fēng)管與排煙口。增加了室內(nèi)空間，密閉性好、不返煙、不返臭，能大幅度改善室內(nèi)環(huán)境。

　　To a large extent, the ventilation duct of the workshop which is applied professionally can directly reduce the occupation of the upper space of the basement ventilation and the amount of its air duct. The ventilation mode of the basement is reasonable. When it is arranged, the exhaust duct and air outlet are usually used for air exhaust. In case of fire, they must be used as both smoke exhaust duct and smoke outlet. The indoor environment can be greatly improved by increasing the indoor space, good airtightness, no return of smoke and odor.

　　在進(jìn)行廠房通風(fēng)管道1設(shè)計(jì)的時(shí)候，污水處理設(shè)備還要考慮一下排風(fēng)、排煙方面的措施。對(duì)于普通離心風(fēng)機(jī)本身也就是能滿足排風(fēng)排煙方面的要求，但是大風(fēng)量離心風(fēng)機(jī)只可以安裝在地面上，不過(guò)就其占地比較大，需要較大機(jī)房，高溫軸流風(fēng)機(jī)為消防專(zhuān)用風(fēng)機(jī)，這時(shí)候也就是能滿足在280℃ 煙溫之下運(yùn)行30 min的要求

　　In the design of ventilation pipe 1 of the power house, the measures of air exhaust and smoke exhaust should be considered for the sewage treatment equipment. For ordinary centrifugal fans, they can meet the requirements of exhaust and smoke exhaust. However, large volume centrifugal fans can only be installed on the ground, but they occupy a large area and need a large machine room. High temperature axial flow fans are special fans for fire protection. At this time, they can meet the requirements of 30 min operation under 280 ℃ smoke temperature