Clean work surface allows the installation of airduct save time and reduce trouble.
洁净的工作表面可使风管的安装节省时间并减少麻烦。
2
Also particularly explains the superior characteristics, fabrication process and installation of the compound airduct, in addition, analyzes the economic feasibility of the substitute project.
详细讲解复合风管的优越性能、制作工艺及风管的安装，并以工程实例分析替代方案的经济可行性。
3
Analyses glass-fiber board airduct, introduces its main technical characters, and briefly narrates its fabrication and installation.