aluminium alloy sections

例句：

1. 1. The new car has aluminium alloy sections for the body to improve its strength and durability.
   这款新车的车体使用了铝合金型材，以增强其强度和耐用性。
2. 2.The engineer used aluminium alloy sections to make the machine more lightweight and efficient.
   工程师使用铝合金型材制作了这台机器，使其更轻便且高效。
3. 3.Aluminium alloy sections are commonly used in aircraft construction due to their high strength-to-weight ratio.
   由于铝合金型材具有高强重比，它们常用于飞机建造中。