A circular opening in an opaque screen transmits only a small circular patch of a wave surface. 不透明屏上一個圓孔僅僅透射波面的一小圓塊。
The outer frequency spectra of wind waves are estimated with the time series data of wave elevation measured in the laboratory wind wave flume. 利用實驗室風浪槽內測得的波面序列資料估計風浪外頻譜。
The characteristic surface is essentially an acceleration front. 特徵曲面實質上是一種加速度波的波陣面。
It starts with zero and grows to a maximum slightly behind the wave front. 它從零值開始，並在稍後于波陣面處增長到最大值。
