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Terms for subject
Space
(125959 entries)
primary electron
初级电子
primary element
主[初级]元件
primary error
原始误差
primary evidence
主要证据
primary explosive
起爆药
primary exporting country
原
产品
出口国
primary failure
原始故障
primary fault
原始故障
primary feedback
主反馈
primary field
一次场
primary file
原始文件
primary flat
主平面
primary flight training
初级飞行训练
primary frequency
主用频率
primary frequency standard
主频率基准
primary function
基函数
primary graphic elements
基本图形元素
primary great circle
基本大圈
primary guidance
起始[主动]段制导
primary heat-exchanger
一级热交换
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