备用的英文
“备用”对应的英文单词有：reserve、spare、spare wheel、backup、alternate ，一共5个，具体意思及用法如下：
reserve保护区；储备；保留；替补队员
spare不用，抽出，省掉；节省，俭省；宽恕，饶（命），救命，使某人免遭（麻烦等）；出让，割爱，分让
spare wheel备胎，备用轮胎
backup阻塞；支持，后援；<；计>；备份文件；[乐]伴奏
alternate交替的；轮流的；间隔的；代替的
与备用相关的短语
备用装置backup device;[科技] reserve arrangement;spare plant
备用资金reserve fund
备用零件repair parts;spare parts;spare detail;spare articles
备用成本standby cost
备用补充品refill
备用堤spare dike
备用柴油机auxiliary diesel engine
备用电厂reserve power station
备用现金cash in till;vault cash;[会计] till
备用功率[动力] reserve power;stand by power;non-firm power;KW
备用泵emergency pump;jury pump;reserve pump;reserved pump
备用信贷Stand-by Credits;back-up credit
备用电源stand-by power;[电] reserve power supply;standby electrical SOurce
备用机器stand-by machine;[机] auxiliary machine;SE
备用存储器shelf storage
备用波道standby channel
备用变电所auxiliary substation
备用文件backup file;standby file;back file
备用操作程序operational standby program
备用电路standby circuit;redundant circuit
备用部件spare unit;spare part
备用柴油机发电机组diesel-electric emergency set