The acoustic image is better balanced and more natural sounding across both direct and reverberant fields. 声像在直达声场和混响声场中的声响更加平衡和自然。
Methods The two-dimensional ultrasonogram and color Dopplor flow image of the thyroid of these two diseases were analysed and compared. 方法对两种疾病的二维及彩色多普勒声像图进行分析并比较。
