double optical path-replacement method

Optical-optical double resonance

optical-optical double resonance(OODR)

balance load with double path

double double iron

Double optical circuit

Double optical feedbacks

double optical fiber coupler

Double optical fibers coupling

double optical paths

double optical trap method

Double optical tweezers

Double path underwater acoustic channel

double-optical projection stereoplotter

double-path model

microwave optical double resonance spectroscopy

optical double stars

time-divided double optical paths