反射脉冲
After the problems concerning the background matching as well as the state-of-the-art having been solved, the reflected impulse wave form with 2-2.5 cycles were obtained in the water. The radiation or reception were, in the large, directionless.
在解决背衬匹配和其它工艺问题后,在水中得到了2~2.5个周期的反射脉冲波形、辐射(或接收)方向基本上无方向性。
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