Definition of generatrix in mathematical definition: A surface is a geometric figure, which is the trajectory of a moving straight line moving continuously in space. The straight line that produces the surface is called a generatrix. For example, the front view of a cone is an isosceles triangle, and the waist of this triangle is the cone generatrix.

The definition of bus in power products: refers to the * * * channel with multiple devices in parallel branches. In a computer system, it refers to a * * * shared high-speed path with multiple computers connected in parallel, which can be used to transmit data between these computers at will, but only one device can send data at the same time.