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汉语拼音：chāo shēng bō

频率超出人耳可听范围的声波。超声波的频率高于20，000赫，波长较短，近似作直线传播，在固体和液体内衰减比电磁波小；能量容易集中，因而能引起剧烈的振动，产生许多特殊效应。广泛用于工农业生产、医疗卫生等方面。

• He measured the speed at which ultrasonic waves travel along the bone.

  他测出了超声波穿过骨头的速度。

• Ultrasound showed she was expecting twins.

  超声波扫描显示她怀了双胞胎。

• Most women will be offered an ultrasound scan during pregnancy, although it's not obligatory.

  大多数处于妊娠期的妇女将被建议接受超声波检查，不过这不是强制性的。

• The ultrasonics stopped and the light went soft.

  超声波停了，灯光也弱了一些。

• Set up ultrasonic wire bonding laboratory.

  成立超声波电子焊接实验室。

• Cracks can be detected by a method using ultrasonic waves.

  疵点可用超声波方法检测.

• Much as bats do, robots send out ultrasonic signals.

  机器人就象蝙蝠那样地发出超声波讯号.

• In medical and other applications of ultrasonics , a variety of electronic instrumentation is used.

  超声波在医学和其它应用中, 要使用许多电子仪器设备.

• The welds passed the examination of radiographic test ( ultrasonic inspection, magnetic testing ).

  这焊缝通过射线透视检查 ( 超声波探伤 、 磁力探伤 ) 合格.

• Electromagnetic acoustic transducer ( EMAT ) is a new ultrasonic transmitting and receiving device.

  电磁 超声换能器 是一种新型的超声波发射接收装置.

• The relations of ultrasonic motor output characteristics and drive frequency are nonlinear.

  超声波电机的输出特性与驱动频率呈非线性关系.

• Sounds are classified into two kinds: sonic and ultrasonic.

  声波分为两类, 即 普通声波与超声波.

• Now he feels much better after an ultrasonic shower.

  他接受了一次超声波浴,现在感觉好多了.

• An echocardiogram is the most useful test for diagnosing MVP.

  超声波心动图通常是最为有用的MVP诊断性检查.

• Piezoelectric ceramic is used widely for ultrasonic fish finder.

  压电陶瓷广泛应用于超声波鱼探仪.