常見例句雙語例句A crucial issue in a passive sonar system is detection of the spectral lines.在被動(dòng)聲納系統(tǒng)中，線譜檢測(cè)是一個(gè)至關(guān)重要的問題。Feature extraction of targets radiated-noise is the key technique of passive sonar target recognition system.目標(biāo)噪聲特征提取是被動(dòng)聲納目標(biāo)識(shí)別系統(tǒng)的關(guān)鍵技術(shù)。First the paper explains the principle and physical basement of passive SONAR direction and the reason that will lower the precision.論文闡述了被動(dòng)聲納測(cè)向原理及物理基礎(chǔ)，并分析了影響測(cè)向精度的主要因素。 返回 passive sonar