backward wave [电子] 返波 ; 后向波 ; 逆向行波
backward wave tube 返波管 ; 回波管
backward wave amplifier 返波放大器
backward-wave oscillation 返波自激振荡
backward wave mode 返波模式
backward-wave effect 回波效应
backward wave property 后向波效应
backward-wave converter 反波变频管
backward-wave magnetron 反波式磁控管
It is shown that the high efficiency and weak dispersion of backward-wave oscillations can be accounted for by induced a plasma photonics crystal.
数值计算发现，等离子体光子晶体对色散有很大的影响。
Researchers say that a "backward traveling wave" can explain why traffic jams sometimes appear seemingly out of nowhere. Cynthia Graber reports.
研究人员称“反向驾驶浪潮”能够解释为何交通阻塞有时候似乎好像无缘无故的出现。
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