帮我写篇介绍超声波的英文文章要英文啊,一定要精简,不要转载的那个,太深奥了弄不懂~内容要包括1.what is ultrasound2.the difference between ultrasound and everyday sound waves?3.what is a piezoelectric transducer?4.

帮我写篇介绍超声波的英文文章要英文啊,一定要精简,不要转载的那个,太深奥了弄不懂~内容要包括1.what is ultrasound2.the difference between ultrasound and everyday sound waves?3.what is a piezoelectric transducer?4.
帮我写篇介绍超声波的英文文章
要英文啊,一定要精简,不要转载的那个,太深奥了弄不懂~
内容要包括
1.what is ultrasound
2.the difference between ultrasound and everyday sound waves?
3.what is a piezoelectric transducer?
4.how does a piezoelectric transducer work?
5.how dose the sound energy measured?
6.what is the attenuation of ultrasound?
7.how the reflection and transmission of ultrasound waves occur?
8.what is acoustic impendence?
9.what is the reflection coefficient?
10.how heat treatment and the destructive effects of ultrasound can be used in treatments?

帮我写篇介绍超声波的英文文章要英文啊,一定要精简,不要转载的那个,太深奥了弄不懂~内容要包括1.what is ultrasound2.the difference between ultrasound and everyday sound waves?3.what is a piezoelectric transducer?4.
Ultrasound is acoustic energy in the form of waves having a frequency above the human hearing range.
Ultrasound is More powerful, more dangerous, more unethical.
The active element of most acoustic transducers used today is a piezoelectric ceramic, which can be cut in various ways to produce different wave modes
A transducer is a system that converts a physical chemical or any natural quantity into a desired form of energy as an indicator
sound energy is uniformly distributed throughout the. room. In this type of room, it is possible to measure.
Ultrasonic attenuation, which is the sum of the absorption and the scattering, is mainly dependent upon the damping capacity and scattering from the grain boundary in the material.
Reflection and transmission of ultrasonic waves by a layer-like region of distributed microcracks in a bulk material has been investigated.
The reflection coefficient is used in physics and electrical engineering when wave propagation in a medium containing discontinuities is considered.
Ultrasound can also be used in Phonophoresis. This treatment involves the application of a topical anti-inflammatory.

1,超声波是什么
2,超声波与日常声波的不同之处。
3,压电式换能器是什么？
4,压电式换能器如何工作？
5,声能是如何进行测量的？
6,超声波递减是什么？
7,超声波的反射与传递是如何进行的？
8,声阻抗是什么？
9,反射系数是什么？
10,在医疗当中，热处理和超声波的破坏作用是如何被运用的？...

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1,超声波是什么
2,超声波与日常声波的不同之处。
3,压电式换能器是什么？
4,压电式换能器如何工作？
5,声能是如何进行测量的？
6,超声波递减是什么？
7,超声波的反射与传递是如何进行的？
8,声阻抗是什么？
9,反射系数是什么？
10,在医疗当中，热处理和超声波的破坏作用是如何被运用的？

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有要专业、又不能太深奥。。。要求真高，。。多少字啊？