例句與造句

1. A study on classification of transient sonar echoes
   的瞬態(tài)回波分類研究
2. Denoising processing of active sonar echo data based on matlab and wavelet transform
   和小波變換的主動(dòng)聲納回波數(shù)據(jù)消噪處理
3. The thesis reviews the theory which is the basis of synthetic aperture processing and introduces five algorithms of image reconstruction : the coherent addition provides a good opportunity for the real time sas ; the envelope processing can work when sonar echo returns lack phase coherence ; the i - q processing can reduce the sampling rate ; the broadband and ctfm processing are both aimed to increase the sas mapping rate
   討論了用于重構(gòu)圖象的五種算法，包括簡(jiǎn)單的可進(jìn)行實(shí)時(shí)處理的相關(guān)合成法，可以在缺乏相位信息時(shí)使用的包絡(luò)處理法，可以降低采樣率、減少運(yùn)算量、存儲(chǔ)量的正交處理法，可以提高聲納運(yùn)行速度，從而提高成象率的寬帶處理法和ctfm法等五種算法。
4. It's difficult to find sonar echoes in a sentence. 用sonar echoes造句挺難的