window envelope的含義：窗口信封；
window envelope
[英][?wind?u ?env?l?up]
[美][?w?ndo ?nv?lop]
n.（有透明紙窗可見收信人地址的）開窗信封。
例句：The influence to integrated thermal inertia was researched with different area ratio of window to wall, envelope insulation, occupancy activity and furniture in the small scale building model experiment.
通過建造住宅建築的縮比模型進行實驗，研究了不同窗墻比、圍護結構保溫、室內人員活動以及室內家具對建築物綜合熱惰性的影響。