她是世界上第一种在其大部分结构上使用复合材料的飞机，使用比例超过了机体重量的50%。

It's the world's first major airliner to use composite materials for most of its construction, more than 50 percent by weight.

youdao

她是世界上第一种在其大部分结构上使用复合材料的飞机，使用比例超过了机体重量的50%。

It's the world's first major airliner to use composite materials for most of its construction, more than 50 percent by weight.

youdao