英语词汇“keyless ringing”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	keyless ringing
释义	keyless ringing keyless ringing [′kē·ləs ′riŋ·iŋ] (communications) Form of machine ringing on a manual telephone switchboard which is started automatically by the insertion of the calling plug into the jack of the called line.
随便看	variable operating & safety level variable operations and maintenance variable optical delay line variable overheads variable overlap timing control variable packet size variable packet writing variable parameter variable payment plan variable penetrance variable phase amplitude modulation variable phase modulation variable phase-shift keying variable pitch variable-pitch propeller variable pitch propellor variable plan variable point variable portfolio variable positive airway pressure variable power amplifier variable power divider variable power supply variable power throughout variable-precision interval arithmetic processor

英语词典包含2567994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。