standbyn.备用；待命者adj.备用的；应急的standby reserver药剂固定储备量standby facility备用设备,备用贷款Standby Database备用数据库standby capacity备用生产能力standby offering提供的担保standby register备用寄存器standby computer备用计算机Standby Practice备用信用证standby lighting备用照明standby material备用料