Complex sentence: A category of experimental fusion reactors called mirror machines confine plasma within a magnetic field between two magnetic mirrors.largest to be built was the Mirror Fusion Test Facility (MFTF) in 1986.
Split into simpler sentences: A category of experimental fusion reactors called mirror machines confine plasma within a magnetic field between two magnetic mirrors. The largest to be built was the Mirror Fusion Test Facility (MFTF) in 1986.