值年用英语怎么说_值年英文怎么写

year of entry into service

值年───year of entry into service

While certification and deliveries had been planned in the third quarter of next year, the delay pushes entry into service to mid-2013.───尽管此前认证和交付被定在明年第三季度，这次延迟将其投入使用推迟到了2013年年中。