延迟变化 meaning in English

delay variation

Methods of measurement for waveguides - variation of group delay
波导管测量方法.频谱延迟变化范围
Methods of measurement for waveguides . part 3 : variation of group delay
波导测量方法.第3部分:成组延迟变化
The variation of ztd is mainly caused by the zenith wet delay ( zwd ) . zenith hydrostatic delay ( zhd ) and zwd from different gps sites exhibit individual features that zhd has a obvious periodic change and zwd is related to weather
总延迟的变化主要是由湿延迟的变化而引起，其中静力延迟变化呈现了明显的周期性，而湿延迟的变化与天气过程相关联。
Because mpeg video need more storage space ( though achievements in compression algorithms have decrease it to a reasonable degree ) , high transmission bandwidth , low transmission delay and delay jitter ( especially to real - time video ) . how to guarantee video transmission qos ( quality of service )
如何在宽带ip和atm网络上有效地传输mpeg视频，才能有效地保证视频传输的服务质量参数qos （如延迟、延迟变化等），以及用户终端表示的表现质量参数qop ，一直是近年来学术界研究的热点。