zài / kòng zhì / xì tǒng / shè jì / zhōng / gōng chéng shī / xū yào / jì suàn / xì tǒng / de / ān dìng shí jiān在控制系统设计中,工程师需要计算系统的安定时间。In control system design, engineers need to calculate the settling time of the system.