短語詞組短語Technology Demonstrator 技術(shù)驗證機light demonstrator 燈光演示儀demonstrator aircraft 驗證機electric demonstrator 電學(xué)演示儀sampling demonstrator 抽樣示范教具screen demonstrator 屏幕演示projection demonstrator 投影演示器digital demonstrator 數(shù)字顯示 返回 demonstrator