词汇	four-electrode vacuum tube
释义	four-electrode vacuum tube 四极真空管
随便看	a highly professional administrator a highly profitable business a highly readable style a highly readable style,essay,article,etc a highly recommendable book a highly respectable neighbourhood a highly scientific approach a highly-sexed woman a highly significant discovery a highly skilled workforce A highly sophisticated weapons system a highly stratified society a highly strung person a highly varnished table-top a highly venomous snake a highly volatile personality a highly volatile situation a highly wrought article a high-minded girl a high-minded woman a high mogul a high mountain a high muckamuck A high muckamuck a high number