请输入您要查询的词汇:

 

词汇 operational
词源

operational adj.

1922, "pertaining to operation," from operation + -al (1). Meaning "in a state of functionality" is from 1944.

updated on September 03, 2012

随便看

 

英语词源词典收录了45867条英语词源词条,基本涵盖了全部常用英语词汇的起源、历史,是研究英语词汇或通过词源学英语的必备工具。

 

Copyright © 2000-2024 Newdu.com.com All Rights Reserved
更新时间:2025/5/2 6:19:36