bottom echo 中文意思是什麼
bottom echo
解釋
底波-
Echo extraction from bottom reverberation based on chaos
基於混沌理論的海底混響中目標回波提取 -
The echo of single hole was high, its front was steep edge ; the echo of dense hole was connected and uneven ; the echo of crack was high and keen - edged, the bottom echo was decline in some certain ; the echo root of bird ' s net had some small wave followed
單個孔洞反射回波高，前沿較尖銳；密集氣孔回波參差不齊，根部互相連接；裂紋回波高而尖銳，底波有所下降； 「鳥巢」缺陷的反射波根部有若干小波峰出現。
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