词汇	proof obligation
释义	proof obligation 证明责任
随便看	optical time domain refectometer optical time domain reflect optical time domain reflection optical time domain reflect meter optical time domain reflectometer optical time-domain reflectometer optical time-domain reflectometerotdr optical time domain reflectometer, OTDR optical time-domain reflectometers optical time domain reflectometry optical time-domain reflectometry optical time-domain reflectormeter optical time domain refractor optical time standard optic altimeter optical timing extraction optical-to-elec optical-to-electrical converter optical-to-electrical transducer optical token ring optical tolerance optical tolerance gage optical tomography optical tool optical tooling