字典網>> 英漢字典>> D開頭詞條>>direct-radiator speaker的意思 漢英字典direct-radiator speaker中文翻譯：【電】 直接輻射揚聲器英文字典 相關詞條：direct welding direct material cost variance direct labour cost budget direct reading meter direct Wiedemann effect directional reception direction angle direct memory access line direct-inset subroutine director's fees