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to phrases
safety channel
archit. 安全玻璃
el. 反应堆安全保护通道核
space 安全管道 (火箭上升段轨道参数允许偏离预定值的管状范围)
tech. 安全航道
safety channel
: 6 phrases in 3 subjects
Electronics3
Space2
Technology1

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