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for subject
Aviation
containing
双环
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all forms
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in specified order only
Chinese
English
双子星飞船环境控制系统
Gemini environmental control system
(美国)
双层环形警戒雷达系统
double perimeter radar system
双循环
dual-cycle
双环
截面
double bubble
双环
氧化合物
diepoxide
双闭环
two-loop
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