以下是用rose画的机房收费系统的顺序图:3,生命线(lifeline):表示对象
form template method(塑造模板函数)
活动者(actor)或者 对象(object)生命线(lifeline)激活(activation)
a lifeline represents an individual participant in a sequence
aimed at cumbrian sixth form students has had its deadline
Tips:Do Not Provide
Personal Loans: Go Easy On Your Finances
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