单词	plane wave
释义	plane wave noun : a wave whose wave fronts are plane surfaces corresponding to parallel rays light waves from the distant stars are virtually plane waves when they strike a telescope lens Word History Etymology plane entry 5
随便看	focussing focussings FOD fodder fodder beet foddered fodderers foddering fodderings fodderless fodders fodgel fodient foe foederati foederatus foehn foehnlike foehns foeless foeman foemen foenicula Foeniculum foeniculums

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