英语词汇“ptr”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	ptr
释义	ptr abbr.painter 画家; printer 印刷工人; photoelectric tape reader 光电输入机; pupil-teacher ratio 小学生教师比例
随便看	control limit chart control limit factor control limits control limit switch control line control line limitation control-line model control line model control line pair controlling controlling account controlling accounts controlling agency controlling air cooling of engines controlling air flow in ventilation systems controlling and feedback with evaluation controlling and manipulating capability controlling and monitoring system controlling apparatus controlling application program controlling arrangement for steam condensers controlling beam controlling board controlling box controlling bubble oxygenation

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