Systems engineering - systems life cycle processes 系統(tǒng)工程.系統(tǒng)壽命周期過程
Systems engineering - system life cycle processes 系統(tǒng)工程.系統(tǒng)壽命周期過程
System life cycle 系統(tǒng)饋入程式
In other words , the system life cycle is the design , development , test , production , operation , and retirement , ( or disposal ) of the system 換句話說,系統(tǒng)生命周期是設(shè)計、發(fā)展、測試、生產(chǎn)、操作和退休, (或處理)系統(tǒng)。
When coolant stops flowing through , the contact surfaces have to be opened to prevent dry friction so that the system life cycle is elongated 當(dāng)冷卻劑停止穿越時,這封閉面將馬上打開避免摩擦,而這個功能保證壽命長。