神马作文网帮我写篇介绍超声波的英文文章
来源：学生作业帮 编辑：神马作文网作业帮 分类：英语作业 时间：2024/11/19 20:06:52
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?
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?
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.
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.