ultrasonic investigation的意思|示意

The Methodological investigation on the measurement of thickness of downhole casing with ultrasonic pulse echo technique is carried out both in theory and in experiments.

利用理论分析和实验模拟的方法研究了超声脉冲反射技术测量井下套管厚度的方法。

Objectives: Through observing skull bottom non-hole crack weak area, to provide anatomy foundation for the ultrasonic investigation in the skull and bone fracture in the skull bottom.

目的：观测颅底非孔裂薄弱区，为颅底骨折及颅内超声探查提供解剖学基础。