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- primary air duct 主空气通路
- External air duct and exhaust pipe connector. 外置式出入油管连接座。
- No consideration of the grounding for air duct and air-condition. 风管及空调设备没有考虑接地。
- Lists some Japanese enterprises dealing with air duct cleaning. 列出了日本几家开展空调风管清扫业务的企业。
- Presents an introduction to Italian ALP air duct system. 提出了风管合流数和系统经济数的概念。
- HVAC system ---Thermal insulation for the air duct and pipe system of HVAC. 空调系统---送风软管及管道法兰的保温各类罐体、设备的绝热保温及吸产降噪。
- Rectify the gap at final connections between air duct and grille / louvre. 修补通风喉管与通风格栅/百?风口接驳处的空隙。
- One of the air ducts has become blocked. 有一条输气管堵塞了.
- Analysis of the Reason and Avoid Measure About Primary Air Piping Jam of the Boiler Burning System. 锅炉燃烧系统一次风管堵塞原因分析及其防范措施。
- When the primary air blast wave from the explosion strikes the ground, another blast wave is produced by reflection. 当爆炸引起的入射冲击波触及地面时，由于波的反射便产生另一冲击波。
- The sealing material for air duct going though walls not good, it will cause shrinkage. 某些风管穿墙处,密封材料不好,会变形萎缩。
- The problem that the primary air leakage of trisector AH is large arises some domestic customer s attention. 三分仓空气预热器一次风泄漏量偏大，引起国内部分用户的反响。
- Remove combustible insulation or rectify flame-retardant property at * air duct / pipework / air handling unit. 通風喉管／管道／風櫃的易燃隔熱層須予拆除或其防火特性須予矯正。
- The bronchial lavage has achieved a good effect in diagnosing diseases of air duct in neonatus clinic. 在新生儿临床亦逐渐应用支气管灌洗于诊治气道疾病,并取得满意疗效。
- Understand the origin of primary air and formation of modern atmosphere which is related to emergence of animals and plants. 了解原始空气的由来以及现代大气的形成与多动植物的出现有关。
- Inspecting whether the brackets and cradles for the air duct and condensate pipes are reliable. 检查风管及冷凝水管固定支架、吊架是否牢固。
- Nagel easy company is willing to work with you to work together to promote the cause of China's air duct cleaning! 易格尔公司愿与您共同努力，一起推动中国风管清洗事业！
- The distributions of gas temperature, O2, CO2, CO, and NO concentrations were measured under different swirl numbers for the primary air. 测量了在不同的一次风旋流数下,气体的时均温度、O2、CO2、CO和NO浓度的分布。
- Analysis was made on how concentration of pulverized coal, primary air, mill outlet temperature and pulverized coal fineness affected ion ignition. 分析了煤粉浓度、一次风速、二次风量、磨煤机出口温度和煤粉细度等因素对其点火性能的影响；
- Double pipe cyclone air duct Normal highway vehicle adopts double pipe cyclone air duct filtering device + normal air filter. 双管旋风进气道普通公路用车采用双管旋风进气道滤清装置+普通空气滤清器。
