涩老板在线免费视频_午夜成人精品_神马理论午夜,,_亚洲有薄码区久久欧美精品一区_97人人色_神马在线精品_成人熟女一区二区_亚洲二区三区四区_人妻午夜免费_大鸡巴猛男爆操骚逼国产一区二区_丁香婷婷久久一区二区三区_岛国内射美女_亚洲一级电影,亚洲欧美日韩国产最新版,亚洲五月综合缴情综合久久本,少妇色情喷水又紧又爽小说,巜上司的少妇的滋味,国产精品三级女人国产香蕉,亚洲最好的免费电影,欧美亚洲国产成人精品,国产永久一区二区三区,亚洲综合一区无码精品,歳の熟女セックス,内射带小孩熟妇,果冻传媒在线看免费视频观看,成人欧美一区二区三区片,亚洲 片内射欧美美妇,一本无码人妻在中文字幕免费,亚洲无毛视频,中文字幕丰满孑伦无码专区,亚洲爆乳无码专区色戒纶理,肉乳床欢无码片动漫软件,欧美日韩一区二区另类,久热只有精品在线直播,精品亚洲一区二区在线播放,精品国产乱码久久久久久影片,国产一级高清在线观看,国产精品福利在线一区,成人动漫下载,乱伦性爱视频,xo无码AV毛,国产黄A片免费网站免费,日韩欧美一级特黄特色大片

　　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.

　　進行應用的廠房通風管道，在很大的程度上其實也就是能直接的就減少地下室通風上部空間占用以及其風管用量。地下室通風方式合理，就其在進行布置的時候，排風管及排風口，平時排風用，火災的時候必然會兼作排煙風管與排煙口。增加了室內空間，密閉性好、不返煙、不返臭，能大幅度改善室內環境。

　　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.

　　在進行廠房通風管道1設計的時候，污水處理設備還要考慮一下排風、排煙方面的措施。對于普通離心風機本身也就是能滿足排風排煙方面的要求，但是大風量離心風機只可以安裝在地面上，不過就其占地比較大，需要較大機房，高溫軸流風機為消防專用風機，這時候也就是能滿足在280℃ 煙溫之下運行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