该演示火箭将帮助验证设计中的假设状况，以便在建造战神一号X型时，工程师们可以确保它按预期的方式飞行。

The demonstrator will help verify design assumptions so that when the Ares 1 proper is built, the engineers can be confident it will fly as expected.

youdao

Yeah, if you immediately said, "Well, if the vector is , then the vector looks like this.", you're making the assumption that I am writing the vector in terms of i and j.

对,如果你紧接着就说," 如果一个矢量是,那么它就像这样 ",你其实就是假设了,我是按 i 和 j 分量的形式写的这个矢量

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