The performance of two smooth handoff mechanisms namely buffering and forwarding method and advance registration method are analyzed theoretically under a suita ble network model.
首先在合适的网络模型下从理论上对存储转发和预先注册 2类平滑切换机制的性能进行了分析 ,主要计算了为达到零分组丢失缓存节点所需的缓存数以及切换时分组所遭受的额外时延 ;在此基础上通过数值仿真的方法对两者的性能进行了详尽的比较 ,结果表明存储转发方法性能难以满足应用的需求 ,预先注册方法缺乏通用性 ;最后针对现有平滑切换机制存在的上述性能和通用性问题 ,提出了一种基于预测的平滑切换机制 ,其性能接近于预先注册方法 ,而适用范围却与存储转发方法一样广
To doom or condemn beforehand.
注定预先注定或宣判
To foreordain or elect by divine will or decree.
命中注定通过神意或神谕来预先注定或选择
Controlled by or as if by fate; predetermined.
命中注定的被(或像是被)命运掌握的;预先注定的
The act of God foreordaining all things gone before and to come.
注定命运上帝预先注定所有已去或将来事物的行为
Nothing had changed except your own attitude: the predestined thing happened in any case.
除了你自已的态度之外,什么都没有改变; 预先注定的事情照样发生。
The divine decree foreordaining all souls to either salvation or damnation.
宿命预先注定所有灵魂或得到拯救或得到永久的惩罚
The doctrine that God has foreordained all things, especially that God has elected certain souls to eternal salvation.
宿命论上帝已经预先注定万物的教义,尤指上帝已经选择给予某些人永久的拯救
Acceptance of the belief that all events are predetermined and inevitable.
对宿命论的信仰接受所有事情是预先注定、不可避免的这一信仰的接受
The inevitable events predestined by this force.
命中注定的事被这种力量预先决定了的不可避免的事件
You can set the defaults in advance. Note that the keys of the dictionary are always lowercase.
可以预先设定缺省值。注意字典的键值都是小写的。
To condition, train, or accustom in advance.
预先处理预先决定、训练或使习惯
predetermined value
预先确定的值,事先规定的值
contractual prices established in advance
预先确定的合同价格
predefined data type
预先定义的数据类型
preset digit layout
预先给定的数位格式
prequalified consortium
经预先审定资格的财团
predetermined code
预先编定的号码系统
He stipulated payment in advance.
他规定要预先付款。
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