varying speed造句怎么写

"It also calculates the net change in a system over an interval, thus leading to formulas for the work done by a varying force or the distance traveled by an object moving at varying speeds. "

You can also get interesting curved paths just by varying speeds of both wheels.

This paper discusses the technical scheme and the operation results of frequency varying speed regulation of home used air conditioner.

They have muscle fibers of various kinds that contract and expand at varying speeds and strengths.