名词
中文翻译：发射阶段
同义词：
['emission stage', 'emission phase', 'emission stage of', 'emission period']
例句：
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1. The scientisthas just finished the emission stage of his research project.
科学家刚刚完成了他的研究项目的发射阶段。
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2. During the emission stage, the satellite is in a low orbit around the Earth.
在发射阶段，卫星在地球低轨道上绕地球运行。
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3.The engineers have to ensure that the emission stage of the engine is smooth and efficient.
工程师们必须确保发动机的发射阶段平稳且高效。