You said this is the case of some cities in the main intersection installed tailpipe detection system (electronic display, road remote sensing test equipment, camera three parts, the road a similar speed reducer-like remote sensing detection equipment, as long as the car pressure over the remote sensing equipment, the LED screen in front of the vehicle will show that the vehicle tailpipe emissions qualified or failed to display the license plate number, tailpipe qualified or failed to show the vehicle license plate number, tailpipe qualified or failed to show the vehicle license plate number, tailpipe qualified or failed, is to notify in advance, is to notify in advance. The company's website is a great source of information about the company's products and services, and it's a great source of information about its products and services.

High speed, referring to advanced speed, is compared to medium and low speed. Low speeds dominate the environment in which low speeds are general or regular speeds, while medium speeds dominate the environment in which medium speeds are general or regular speeds.

Relationship between high speed and fast speed: in the dichotomy (fast-slow comparison), the broader fast speed includes high speed as opposed to slow speed, but the word fast does not imply high end, and in the multi-object comparison, fast speed is higher than low speed and lower than high speed and quasi-fast speed. In the trichotomy, the title of fast is medium speed, which is higher than general speed and lower than high speed. In the trichotomy, express highways are lower than highways, express railroads are lower than high-speed railroads, and express trains are lower than high-speed trains.

Relation between high speed and fast speed: in the dichotomy (fast-slow comparison), the broad sense of fast speed is relative to the slow speed, including high speed, but the word "fast" doesn't mean high end, and in the multi-object comparison, it is fast speed is higher than the low-speed and lower than the high speed and quasi-high speed. In the trichotomy, the title of fast is medium speed, which is higher than general speed and lower than high speed. In the trichotomy, expressway is lower than highway, express highway is lower than freeway, express railroad is lower than high speed railroad, express train is lower than high speed train.

Fast compared to slow, regular speed (ordinary speed is slow in the technical system), downward comparison, is two objects in the ratio, fast does not mean high end; high is positioned high-end, compared to low and medium, is three objects in the ratio; if you compare the two objects of medium and low (regular speed), in the field of speed, medium is fast, low is slow, faster than the low speed (regular speed), medium speed is fast, so in the trichotomy. Medium speed is called fast, so, in specification, fast is lower than high speed.

In addition, the international academic railroad eight-stage method, the object of comparison is more, then the fast is lower than the quasi-high speed and high speed. Comparison of different objects and the status of the change of similar examples: a beautiful voice singer in a small country is a good singer, is a master, but immigrants to the big country may be the level of ordinary singers, in the global comparison may be the poor level.