Results:The ultrasonic characteristics of ulcerative colitis were the thickening of intestinal wall with decreased echo, narrowing of intestinal lumen, and loss of gas in it.
结果：溃疡性结肠炎声像图特征性表现为肠壁增厚，回声减低，肠腔变窄，肠气消失。
2
It possesses of the advantages of high Echo Return Loss Enhancement and good adaptability to circuitry condition experimentally.
实验表明，该回波抵消器具有回波抑制能力强、线路环境适应性好等特点。
3
The nation will suffer great financial loss since China now is in the midst of a TV series boom in an echo of its economic prosperity; the people will be confused as to how to kill their spare time.