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Aviation
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Security Control
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English
Chinese
central
security control
system
安全控制中心系统
emergency
security control
of air traffic
空中交通的紧急安全管制
joint
security control
联合安全控制
security control
of air traffic
空中交通安全控制
security control
of air traffic
空中交通安全管制
security control
of air traffic and air navigation aids
空中交通安全管制与导航设备
security control
of air traffic and air navigation aids
空中交通安全控制与导航设备
(美国联邦航空局，用于国防紧急需要时的规定和指令)
security control
of air traffic and electromagnetic radiations
空中交通安全管制与电磁辐射
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