The perfect rich man in the city

The development of Zhongzhou City has made surrounding cities jealous.

But there is no way, who allowed such an outstanding person to appear in Donghai Province.

Other prefecture-level cities in Donghai Province are also a little jealous.

If Zhongzhou City eats meat, they can drink some soup.

They also want to eat meat.

Therefore, many leaders of prefecture-level cities have expressed their hope that if any good projects come up, they will be reminded of them.

Some leaders even took Zhong Jing's route and wanted to contact Zhong Jing.

Among them, the leaders of Guangming City, Donghai Province are the most enthusiastic.

Guangming City is a coastal city with a port.

Moreover, these leaders also have some relationship and contact with Zhong Jing.

Zhongjing built a small port on the seaside, which was not very big.

His yacht is docked there. Normally, Zhong Jing rarely goes to the yacht.

Basically idle.

Just the maintenance fee, I don’t know how much it is.

That is to say, Zhong Jing is not short of money, and ordinary wealthy families can't afford it. It's too expensive.

Zhong Jing’s private yacht and private jet have fed an unknown number of people.

The happiest person is the one working on his private yacht.

Basically, you don’t have to work and you get paid every month.

It can be said to be the happiest.

Of course, something will give.

When Zhong Jing goes to sea, they will follow him, saying he is a waiter, but he is indeed a waiter.

However, the service method is different

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Donghai Province has a provincial capital and a sub-provincial city.

The provincial capital is Zhongzhou City and the sub-provincial Guangming City.

Similar to Fengtian and Bincheng in Liaodong.

Quancheng and Qindao in eastern Shandong.

Guangming City is located in the East China Sea, and it used to suppress Zhongzhou City.

Especially economically, the situation is stable.

However, with the rise of Zhongjing, various resources were tilted.

Forcibly raising the economy of Zhongzhou City to a higher level.

The leaders of Guangming City are envious.

But there is nothing to be done, because Zhong Jing is from Zhongzhou City and has feelings for it.

As the best university in Donghai Province, Tunghai University is really awesome.

It was originally a key university.

Later, after Zhong Jing made several donations, a new teaching building was built, various instruments were purchased, and a laboratory was established.

The state also supports Tunghai University.

The admission score of Donghai University was abruptly increased by more than 20 points.

There are too many people signing up.

Zhong Jing occasionally comes to Tunghai University to take classes.

It also improved the level of computer science at Tunghai University.

Zhong Jing has relatives who are leaders at Tunghai University.

He was also promoted for Zhong Jing's sake.

Zhong Jing donated a lot of things to Tunghai University, and they were not cheap.

For example - ultrasonic sensor.

This instrument is worth tens of millions.

Very expensive.

This thing is like a sports car, some are expensive and some are cheap.

But the cheap ones are of poor quality.

Zhong Jing couldn't do anything either.

Ultrasonic sensors are sensors that convert ultrasonic signals into other energy signals.

Ultrasound is a mechanical wave with a vibration frequency higher than 20kHz. It has the characteristics of high frequency, short wavelength, small diffraction phenomenon, especially good directivity, and can become rays and propagate in a direction.

Ultrasonic waves have great penetration ability into liquids and solids, especially in solids that are opaque to sunlight. When ultrasonic waves hit impurities or interfaces, they will produce significant reflections to form reflection echoes, and when they hit moving objects, they can produce the Doppler effect.

Ultrasonic sensors are widely used in industry, national defense, biomedicine, etc.

Available in many majors.

For example, medicine and industry.

The main application of ultrasound in medicine is to diagnose diseases, and it has become an indispensable diagnostic method in clinical medicine.

The advantages of ultrasonic diagnosis are: no pain or damage to the subject, simple method, clear imaging, and high diagnostic accuracy. Therefore, it is easy to promote and is welcomed by medical workers and patients. Ultrasound diagnosis can be based on different medical principles. Let's take a look at a representative one of them, the so-called Type A method.

This method uses the reflection of ultrasonic waves. When ultrasonic waves propagate in human tissue and encounter two media interfaces with different acoustic impedances, reflected echoes are generated at the interface. Every time a reflective surface is encountered, the echo is displayed on the oscilloscope screen, and the impedance difference between the two interfaces also determines the amplitude of the echo.

In industry, typical applications of ultrasonic waves are non-destructive testing of metals and ultrasonic thickness measurement.

In the past, many technologies were hampered by their inability to detect inside the tissue of an object. The emergence of ultrasonic sensing technology has changed this situation.

Of course, more ultrasonic sensors are fixedly installed on different devices to"quietly" detect the signals that people need.

In future applications, ultrasonic waves will be combined with information technology and new material technology, and more intelligent and highly sensitive ultrasonic sensors will appear.

Ultrasonic distance sensors can be widely used in material level (liquid level) monitoring, robot anti-collision, various ultrasonic proximity switches, and anti-theft alarms and other related fields. They are reliable, easy to install, waterproof, have a small emission angle, and have high sensitivity. It is convenient to connect with industrial display instruments, and probes with larger emission angles are also provided.

People majoring in medicine and physics can use this instrument.

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