And the solid rockets are important because they provide about 90% of the thrust needed to get spaceline system off the ground.
固体火箭很重要,因为它们提供了使航天系统离开地面所需的大约 90% 的推力。
单词 | spaceline |
例句 |
原声例句
连线杂志 And the solid rockets are important because they provide about 90% of the thrust needed to get spaceline system off the ground. 固体火箭很重要,因为它们提供了使航天系统离开地面所需的大约 90% 的推力。 |
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