1) ultrasonic contacted focusing probe
超声接触聚焦探头
2) contact focusing angle probe
接触聚焦探头
3) Line-focus PVDF ultrasonic transducer
线聚焦PVDF超声探头
4) focus probe
聚焦探头
1.
According to the principles of geometrical acoustics, deduces focusing distance calculation formula when water immersion focus probe detects in ultrasonic detection, analyzes the rightness of the formula, at the same time analyzes using condition of experienced similar formula referred by relevant papers and factors affecting focusing distance errors.
根据几何声学的原理,推导了超声波检测中水浸聚焦探头探测工件时焦距的计算公式,并分析了所导出公式的正确性,同时也分析了有关文献提出的经验近似公式的使用条件和影响焦距偏差的因素。
5) focusing probe
聚焦探头
1.
Study on multi focusing probes based on measuring wall thickness of oil casing pipe
基于石油套管壁厚检测的多聚焦探头研究
6) Focused ultrasound
聚焦超声
1.
Focused ultrasound treatment of brain diseases;
聚焦超声在脑部疾病治疗中的运用
2.
A clinical study of application of coupling medium in focused ultrasound therapy for chronic cevicitis;
耦合剂应用于聚焦超声治疗慢性宫颈炎的疗效
3.
Evaluation of curative effects of focused ultrasound treatment for nonneoplastic epithelial disorders of vulva;
聚焦超声治疗外阴上皮内非瘤样病变疗效评价
补充资料：超声
超声
UltrasofliCS
是指超出人耳听力范围的高频声(频率超过20000Hz）。超声具有与一般声音共同的物理性质，还具有一些其他重要的物理特性，如能够成束发射，直线传导，方向性好。传导过程中遇有声阻抗不同的反射界面时产生反射、折射、聚焦和散焦等现象。用于临床诊断的超声频率一般为2～7.5MHz。频率越高，对组织结构的分辨力越强，但远场声能容易被组织吸收、衰减，不易穿透较深的层次。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条