... attenuation characteristic 衰减特性 echo attenuation 回声衰减,反射衰减... vibration attenuation 振动衰减,振动衰减量...
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... 回讯（电脑图形的） echo (in computer graphics) 回音衰减 echo attenuation 回音返回 echo back ...
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echo attenuation measuring set 回波衰减测量仪
ultrasonic echo attenuation 超声波回波衰减
Echo free of the attenuation 衰减性无回声
In benign tumors, smooth edges and lateral echo attenuation were demonstrated, and they were of poor blood flow signals.
良性肿瘤多表现为边界光滑，侧缘回声减弱，彩色多普勒不能检出或检出少量星点状血流信号。
An instrument for measuring ultrasonic attenuation by means of comparing the ultrasonic pulse echo with a calibrated exponential decay wave-form is described.
本装置用超声脉冲回波与定标指数波形比较的方法测量超声衰减。
Based upon wave theory and ignoring attenuation losses, the echo amplitude is.
按照波动理论，在忽略衰减损耗的情况下，回波振幅（ ）。
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