1. The theory and method of ultrasonic inspection signal coupling have filled the country blank. 在超声波探伤信号耦合的理论和方法上,填补了国内空白。
2. This paper expounds the measuring principle of ultrasonic liquid gauge, its practical hardware circuit and software design method. 阐述了超声波液位计的测量原理,给出了实用的硬件电路与软件设计方法。
3. The progress in the research of ultrasonic effect on the formation and decomposition of natural gas hydrates, on the nucleation of ice are presented. 介绍了国内外超声波影响天然气水合物形成分解的研究进展、超声波对水成核结冰影响的研究情况;
英英解释
adj.
1. having frequencies above those of audible sound