“下关”概念、定义、翻译-科学时代

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。

单词	下关
释义	中医中药词汇手册下关 life pass
随便看	D-controller DC operational power supply DCP DCPA DC patch bay DCP--DCP (dutiable commodities permit) DCP (dutiable commodities permit) DC power converter DC power supply method DCR DCR--DCR (domestic content requirements) DCR (debt coverage ratio) DCR (domestic content requirements) D criterion DCS DCS--DCS (distributed control system) DCS (distributed control system) DCS (distributed control system) DC secondary and primary clock system DC shunt motor DC solar electricity DC sputtering deposition DC substation DCT DC tachogenerator