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。
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。
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。
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