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Alliant suggests building special satellites enclosed in multiple spheres of strong, lightweight materials.
能源公司建议,研制一种特殊卫星,这种卫星外面用各种强度好、质地轻的材料包裹起来。
youdao
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Alliant suggests building special satellites enclosed in multiple spheres of strong, lightweight materials.
能源公司建议,研制一种特殊卫星,这种卫星外面用各种强度好、质地轻的材料包裹起来。
youdao