mercury-arc

英 ['mɜːkjʊriː'ɑːk] 美 ['mɜːkjʊriː'ɑːk]

• n. 汞弧

例句

用作名词 (n.)

1. A common laboratory source of light is provided by a mercury arc.
   通常的实验室光源选用汞弧灯。