используемый

см. тж. мало использоваться; наиболее широко используемый

Another type of indicator in use (or used) is the diffusion type.

A single laser beam has many thousands of times the signal-carrying capacity of any other transmission medium in service.

The major design method employed is based on this principle.

Источник: Русско-английский научно-технический словарь на Gufo.me