名词
中文翻译：轨道内测试
同义词：
['in-orbit test', 'orbital test', 'orbital test', 'in-orbit test']
例句：
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1. The spacecraft underwent an in-orbit test before launch.
航天器在发射前进行了轨道内测试。
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2. The engineer conducted an orbital test of the new satellite system.
工程师对新的卫星系统进行了轨道测试。
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3. During the in-orbit test, the engineers observed several issues with the satellite's communicationsystem.
在轨道测试期间，工程师们观察到了卫星通信系统的几项问题。