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外贮箱是航天飞机四个部件(轨道器、两个固体火箭助推器和外贮箱)中体积最大的一个部件。它是唯一的一次使用部件,在整个航天飞机结构中,起到了双重的作用,既
The outer tank is one of the largest components of the space shuttle’s four components (orbiter, two solid rocket boosters and outer tank). It is the only one-time-use component that plays a dual role throughout the space shuttle structure, both