单词	n/d
释义	同N/D--no dated
随便看	main conference main conference main connecting rod main connecting rod main constituent main constituent-- major constituent main constituent; major constituent main contact main contactor main control board main control chain main control console main control console--mcc main control console，mcc main controller main controller unit main control panel main control panel{=mcp} main control rod panel main control rod panel{mcrp} main control room main control room supervisor main control switch main control unit main control valve