Objective To quantify the acoustic density of atherosclerosis plaques with different echogenicity in carotid artery.
目的对人体颈动脉内不同回声强度的粥样硬化斑块进行声学密度定量。
It is necessary to record the linear scale before and after log and the time difference curve in the acoustic variable density log.
摘要阐述了声波变密度测井时对其进行测前、测后线性刻度及记录时差曲线的必要性。
In acoustics, the product of velocity times density, also called acoustic impedance and symbolized by z.
声学中，速度与密度的乘积就是阻抗，也称为声阻抗或波阻抗，用符号Z表示。
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