单词	underfrequency relay
释义	underfrequency relay noun : a relay actuated by a fall in electrical frequency Word History Etymology under entry 3 + frequency
随便看	tubicolar tubicole tubicolous tubifacient tubifex worm tubifexes tubificid Tubificidae tubificids Tubiflorae Tubiflorales tubiflorous tubiform Tubinares tubinarial tubinarine tubing tubings Tubipora tubipore tubist tubists tublike Tubman tubocurarine

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。