管式电测功计 tubular electrodynamometer

零式电测功率计 [电] zero-type dynamometer

镜式电力测功计 mirror electrodynamometer

测热电阻功率计 [物] bolometric power meter

电阻测功计 resistance dynamometer

电力测功计 electrodynamometer

光电探测器光功率计 Newfocus

铁氧体测热电阻功率计 ferrite bolometer power meter