Speed, speed

Speed indicates the speed at which an object moves. Speed is a vector with magnitude and direction. The size of speed is also called "speed". V = signal-to-noise ratio. The "speed" in physics generally refers to instantaneous speed, while the speed of trains and planes usually refers to average speed. In real life, the speed of various vehicles often changes. The speed of light is the upper limit of the known speed.

Quick word list

spell

English translation yiweiquick；; Shortcut; Fasthandi

The basic explanation is quick and agile.

It means fast and convenient, and generally describes fast and high-speed efficiency or information. (generally used for the name of service companies, such as industrial real estate intermediary service companies, hotels, etc. ) generally describes the method of selection.