英语词汇railroad pen怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	railroad pen
释义	railroad pen 简明释义双线笔网络释义 1 [测]?双线笔 ... 双频信标 double frequency beacon 双线笔 railroad pen 双相测距仪 coincidence rangefinder ... 短语 1 Railroad curve pen 曲线双头上墨笔
随便看	rate of turn record rate-of-turn recorder rate of turn rate of twist rate of ultrasonic machining rate of unemployment rate of unit contribution rate of unit contribution margin rate of unloading rate of upward gradient rate of utilization rate of utilization of strength rate of vaccination rate of vacuum down rate of vapor content rate of vapor deposition rate of variation rate of varieties fulfilled rate of vegetation rate of ventilation rate of venting rate of ventricular ejection rate of vitrification rate of voltage rise rate of volume flow

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。