nose compartment door
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飞机前舱门的一个门闩可能脱落了。
A bolt may have fallen off the plane's forward door.
《牛津词典》
通过优化设计技术对当前舱门的结构进行了优化减重，得到了满足要求的改进方案。
Through optimizing design technology, the door structure was optimized to reduce weight. The improvement scheme is obtained.
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