The noise values measured by using gradual acceleration scanning and steady engine speed methods are also compared in this paper.
文中还比较了用发动机转速慢加速扫描的动态方法及稳态转速下测得的噪声值。
Methods Liver scanning was performed with a high frequency transducer to measure the velocity acceleration time and resistant index of portal vein and hepatic artery after finishing the anastomosis.
方法选用高频手术专用探头，于手术中门静脉、肝动脉吻合完成后立即测量肝动脉及门静脉血流速度，并计算快速充盈时间及阻力指数。
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