keyinn.插上keyn.键；关键；钥匙；答案adj.关键的；主要的vt.键入；用钥匙锁上；为 ... 调音keyed attribute信息标号属性,关键属性key and display键盘显示key element set键元集key of the lock开锁的钥匙key-insulated密钥隔离keying frequence键控频率key one - line电气主接线Key Data Station键控数据站keying amplifier电子开关控制电路的放大器,键控放大器key-controlledadj.键控的