aluminium alloy sash

例句：

1. 1.The new car has a sleek aluminum alloy sash that makes it look more expensive.
   这款新车有一个光滑的铝合金窗框，看起来更显高档。
2. 2.The engineer designed the aluminum alloy sash to be lightweight and durable.
   这位工程师设计了铝合金窗框，使其既轻便又耐用。
3. 3. The manufacturer claims that their aluminum alloy sash is energy efficient and reduces air leakage.
   制造商声称他们的铝合金窗框节能且减少空气泄漏。