英语词汇“positive block”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	positive block
释义	positive block noun : a block in which only one railroad train is allowed to be at one time compare block system
随便看	spectroscopic parallax spectroscopically spectroscopies spectroscopist spectroscopists spectroscopy spectrous spectrum spectrum analysis spectrum-luminosity diagram spectrums specula specular specular angle specular iron specular iron ore specular reflection specularia specularities specularity specularly speculate speculate (about) speculate about speculated

英语词典包含469781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。

positive block