emergency SC应急供应链emergencyn.突发事件；紧急状态adj.应急的；紧急的；备用的emergency handle紧急手柄emergency scheme应急预案emergency decree安全技术规程emergency packer紧急用封隔器emergency beacon紧急救援无线电信标emergency access紧急通路emergency shower急救莲蓬头emergency drills应急演练emergency credit紧急信用emergency feeder备用馈电线