Nowadays, many people want to own a car of their own. Not only is it convenient to travel, but they can also go out for an outing with three or five friends. In a traffic-congested city, buying a car is no longer a very strange thing. However, the concept of many people has now begun to change, and will no longer deliberately pursue new cars. More willing to accept used cars. Used car prices are not expensive, although performance is not as good as new cars, but the running-in period is shorter. Nowadays society is changing quickly, and new cars may soon be eliminated. So used cars become very popular. So how do you determine if you buy a used car that is not cheated? For ordinary consumers, they do not know much about the car's professional knowledge and can easily be deceived by the appearance of the used car. How to determine whether a used car is good or bad is a job with high technical content. It is not simply to look at the degree of maintenance of the car's appearance, but to dig deeper, and sometimes it requires the use of some professional tools to identify. The first is to check the appearance of the car, whether the color of the car body is the same, and whether the curvature of the car body is smooth. Also check whether the reflection of the body paint is reasonable. If any of the above three problems have a problem, the car body is repaired. Also check that the sound of the closed door is the same size. What is the degree of tire wear, whether the car's brand is the same, etc. After checking the car body, check whether the seats in the car are clean and tidy. Whether the items in the car are complete and whether the various switch operations are convenient, if the seller refurbish the facilities in the car, consumers should pay attention to it. Used cars may have major problems. The next step is to test drive, check whether the engine is easy to start, you can also hear the sound to determine the problem, start the car, check whether the steering wheel is the same, the steering angle is reasonable. In the process of driving, it is also necessary to listen to the noise of the car. If the noise is large, the car has a big problem. Also check the brake system, whether the brakes are effective, and whether they can quickly and effectively stop. If there are not many problems in the above aspects, basically it can be judged as a better used car, then consumers can feel comfortable buying. At the same time, in the process of purchase, you must carefully check the documents such as the contract, and strive to buy the favorite vehicle. A microscope (from the Ancient Greek: μικÏός, mikrós, "small" and σκοπεῖν, skopeîn, "to look" or "see") is an instrument used to see objects that are too small to be seen by the naked eye. Microscopy is the scienceof investigating small objects and structures using such an instrument. Microscopic means invisible to the eye unless aided by a microscope. Tool Microscope,Video Microscope,Stereo Microscope,Metallographic Microscope Dongguan Jaten Instrument Co.,LTD(HK TT:Jaten Technology Co.,Ltd ​) , https://www.jatentech.com
There are many types of microscopes, and they may be grouped in different ways. One way is to describe the way the instruments interact with a sample to create images, either by sending a beam of light or electrons to a sample in its optical path, or by scanning across, and a short distance from, the surface of a sample using a probe. The most common microscope (and the first to be invented) is the optical microscope, which uses light to pass through a sample to produce an image. Other major types of microscopes are the fluorescence microscope, the electron microscope (both, the transmission electron microscope and the scanning electron microscope) and the various types of scanning probe microscopes.