“manual telephone system”概念、定义、翻译-科学时代

单词	manual telephone system
释义	市政工程词汇手册 manual telephone system 人工电话系统
随便看	ground sesameseed oil ground shading ground ship ground signal panel ground simulation test ground spare satellite ground specific impulse ground speed ground speed-drift angle indicator ground spice ground-start signalling ground state ground state ground state ground state ground state ground state ground-state assignment ground state beta disintegration ground state correlation ground state disintegration energy ground state isotope ground state level ground-state population ground-state relaxation

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

manual telephone system