1·These measures enabled the removal of low ceilings and ductwork, and significantly reduced the home's energy consumption.
这些措施能够移除较低的天花板和管道系统，并显著降低家庭的能源消耗。
2·The method includes the step of coupling together first and second ductwork components.
该方法包括将第一和第二管道系统部件连接在一起的步骤。
3·A method of assembling HVAC ductwork components is described.
描述了一种组装HVAC管道系统部件的方法。
4·Make sure ductwork is insulated.
确保管道系统是绝缘的。