ultrasonic beam meaning in English
超声波射束
超声波束
超声射束
超声束
声波束
Examples
- Ultrasonic bio - instrumentation is a kind of diagnostic instrument widely used in the clinic presently . it can examine the body by the scan of ultrasonic beam and display it by the brightness of ultrasonic echoes and then form the profiles of viscera and pathological changes
B型超声诊断仪是目前在临床中应用最广的一种超声图象诊断装置，它一般具有多种显示方式，如b型、 m型等。 - Ultrasonic bio - instrumentation has several display modes used in medicinal field now , such as b - mode and m - mode , etc . b - mode uses the modulated brightness to represent the amplitudes of ultrasonic echoes , and the coordinates in the formed profiles correspond to positions of ultrasonic beam scans one by one
B型显示是用亮度调制来显示回波脉冲幅度，显示的横轴和纵轴与声束扫描的位置一一对应，形成超声切面图像。 - Laser , ultrasonic beam and microwave are used in non contacting level measuring systems . laser systems suffer from dirt , ultrasonic sensors are strongly affected by changes of the velocity of sound and usually a pipe is needed to couple the ultrasonic waves into the liquid tank , which is difficult when there is a high pressure or when explosion protection is necessary
压力式液位测量系统原理简单、成本低，但测量精度和应用场合有一定的局限性，超声液位仪精度较高，但设备复杂，一般需要用导管将超声波传到被测的液体中，因而安装维护较麻烦，激光测距系统对环境要求严格。