mercury arcn.汞弧mercuryn.水银；（M~）水星；精神mercury microgas analyser水银微量气体分析器mercury absolute pressure水银柱压力mercury electrolytic cell水银电解槽mercury-vapor rectifier汞汽整流器mercury wetted reed relay水银湿式继电器mercury cadmium tellurium碲镉汞mercury-hematoporphyrin血卟啉汞mercury filled thermometer水银温度计mercury dropping electrode汞滴电极mercury injecting quantity注汞量

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。