Backward ECN ( BECN) suggests a congested router to directly return the congestion information to the sender through ICMP source quench ( ISQ) messages to reduce the reaction time to congestion. 其中,后向显式拥塞指示(BECN)建议拥塞的路由器直接把拥塞信息通过ISQ返回给发送端,以减少对拥塞的反应时间。
The Gear's backward differentiation formulas ( BDF) method, in which the step size can be automatically adjusted, is used to solve the complex problem of chemical reaction kinetics. 对模型中复杂化学反应动力学刚性问题采用了能够自动调节步长的Gear向后差分法。