Measure in attics and crawl spaces for insulation and ductwork.衡量阁楼和管道crawlspaces绝缘和.Sheet metal ductwork and specialties, complete with insulation, and dampers in accordance with drawings and specifications.与图纸和规格相符的完全绝...

ductwork的音标：ductwork的英式发音音标为：['dʌktˌwɜ:k]ductwork的美式发音音标为：['dʌktˌwɜk]...

n.管道系统...