例句與造句

1. 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。
2. It's difficult to find echo return in a sentence. 用echo return造句挺難的