紧急信号 [安全] emergency signal ; urgent signal ; alarm signal

应急信件 Emergency envelope ; emergency letter

紧急信用 [金融] emergency credit

紧急信贷 emergency credit

危急信号 emergency signal ; distress signal

危急信号操纵件 hazard warnig signal control

无线电紧急信号 radio alarm signal ; radio urgency signal

释放式紧急信标 W Deployable emergency beacon