词汇	椅座
释义	椅座 seat support
随便看	backup flooding back up for backup force backup for diaster backup for disaster recovery backup for recovery after disaster back-up for wehting backup frequency back-up frequency backup fuel Backup Fuel Control backup function backup functional board back-up funding backup fuse back up fuse back-up fuse backup gap Backup generator back-up government credit facility backup governor backup guidance backup heel back-up heel backup history