名词
中文翻译：空气罩
同义词：
['airtight cover', 'airtight envelope', 'airtight seal']
例句：
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1. The engineer designed aero casings for the aircraft to keep it airtight.
工程师为飞机设计了空气罩，以保持其密封。
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2.The scientist used aero casings to protect the samples from contamination.
科学家使用气密罩来保护样本免受污染。
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3. The aero casing is essential for maintaining the integrity of the spacecraft during launch.
气密罩对于在发射过程中保持航天器的完整性至关重要。