Based on the principle of ultrasonic pulse-echo method,this article studies ultrasonic velocity and its attenuation rule in fat-muscular combo when ultrasonic propagates along different direction of fiber.

• 基于超声脉冲反射原理,对脂肪-肌肉联合体沿纤维不同方向传播时的声速及其衰减规律进行研究。