“manual exchange”的概念、定义、翻译、参考文献-科学参考

单词	manual exchange
释义	manual exchange [`man·yǝ·wǝl iks`chānj] ^{COMMUNICATIONS} Any exchange where calls are completed by an operator.
随便看	relief hole relief limonite relief map relief model relief press relief printing relief shading relief valve relief well relieving relieving anode relieving arch relieving platform relighter flame safety lamp reline relish Relizean stage reloadable control storage relocatable code relocatable emulator relocatable program relocate relocating loader relocation hardware relocation register

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。