abbr. 数字配线架（Digital Distribution Frame）；数
库描述文件（Database Definition File）；微
函数（Differential Distribution Function）；开发论证设施（Development Demonstration Facility）
库描述文件（Database Definition File）；微函数（Differential Distribution Function）；开发论证设施（Development Demonstration Facility）用户正在搜索
multidirectional, multidisc, multidisciplinary, multidraw, multi-drill, multidrive, multidrop, multiduty, multiecho, multi-electrode,
相似单词
DDDA, DDDC, DDDs, DDE, DDEDIT, DDF, DDG, DDGS, DDH, DDHV,