最重要的是它有节省材料、减轻自重、简化桥基、宣泄洪水的几个作用和功能。
The most important thing is that it saves materials, lightens its weight, simplifies the base of the bridge, and discharges floodwaters.
此类结构具有减轻自重、增加楼板刚度、提高隔声效果和降低结构造价等优点。
This structure has the advantages of lightening self-weight, strengthening floor slab rigidity, improving sound insulation and reducing structure cost.
特别是高的比强度使其成为以减轻自重为目的的汽车和航空领域的理想金属材料。
In particular, its high strength weight ratio makes it an ideal metal for automotive and aerospace applications, where weight reduction is of significant concern.
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