词汇	Frans de Vreng
释义	Frans de Vreng 德夫伦
随便看	operational frequency Operational frequency band-width operational funding operational game operational gaming method operational goal operational grade operational grounding operational ground support equipment Operational Ground Support Equipment List Operational Group Equipment operational guidance operational guideline operational guiding thought operational habit operational halt instruction operational-halt instruction operational hardware operational hazard analysis operational hazard report operational headquarters operational health physics operational hedge operational height operational hydrology