单词	leading sunspot
释义	leading sunspot 前导黑子
随便看	general digital camera image general digital computer General digital integreted device general digitl computer general dimension general dimensional analysis general dimension correlation coefficient general diplomacy General Diploma in Dental Technology general direction general directional feature general direction of traffic general direction of traffic flow general director General Directorate of Armament General Director of Archaeology general director's room general dirichlet series general disappointed model general disarmament general disassembler General discernibility matrix general discharge general discharge permit general discharging instructions