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- main air duct 昼道
- External air duct and exhaust pipe connector. 外置式出入油管连接座。
- Gas tightness submission of main air reservoir. 主空气瓶密性提交。
- Analyses glass-fiber board air duct, introduces its main technical characters, and briefly narrates its fabricaton and installation. 全面分析复合玻纤板风管，介绍其主要技术性能指标，并简单叙述其制作和安装。
- 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。
- The main air reservoir has been filled with compressed air. 主空气瓶总压缩空气已经充满。
- Peumatic element and main air cylinder are importation and Yadeke. 气动元件及主要动作气缸为进口和亚得克。
- 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。
- The fume caused by coalburning is one of the main air pollutants in China. 燃煤烟尘是我国最主要的大气污染物之一。
- One of the air ducts has become blocked. 有一条输气管堵塞了.
- The ASU manufacturing process begins with a main air compressor and ends at the output of the product storage tanks. ASU生产过程从一个主气流压缩机开始，产品储存罐的输出后结束。
- 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。
- 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。
- By 2008, the main air pollutants should meet the national standards based on the remarkable regional ecosystem improvement. 到2008年，在环京津地区整体生态状况明显改善的条件下，全市大气污染物主要指标达到国家标准。
- 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。
- Air tightness test and safety valve adjusting for main air receiver (control air receiver, air horn receiver)on board. 主空气瓶(控制空气瓶、汽笛空气瓶)装船后气密试验和安全阀的调整。
