ductwork例句
Measure in attics and crawl spaces for insulation and
ductwork.
衡量閣樓和管道crawlspaces絕緣和.
Sheet metal
ductwork and specialties, complete with insulation, and dampers in accordance with drawings and specifications.
與圖紙和規格相符的完全絕緣的金屬片管路 、 特殊金屬和阻尼器.