旋转汞电极 mercury electrode: 汞电极;水银电极; 水银电极rotating electrode: 旋转电极rotating mercury tachometer: 旋转式水银转数计dro ing mercury electrode: 滴式水银电极dropping mercury electrode: 滴汞电极; 滴式水银电极下载手机词典可随时随地查词查翻译