Make sure ductwork is insulated.
确保管道系统是绝缘的。
installed new ductwork in the building.
在建筑物里安装新的管道系统
Several Issues on Ductwork Installation of Clean Air System
洁净系统风管安装的几个问题
YMeasure along ductwork to detect leaks or improper air flow.
沿管道系统进行测量, 检查漏泄或不正常的气流。
This design eliminates external ductwork that has to be installed and insulated.
这种设计无需外部管道，必须安装和隔热。
Multileaf dampers are used to isolate and restrict the airflow in ductwork and other openings.
多叶阀主要用于通风空调系统中的风量调节和压力控制。
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