名词
中文翻译：水银弧
同义词：
['mercury line', 'mercuryarc', 'mercury arcline']
例句：
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1. The mercury arc lamps are usedin the manufacturing process.
水银弧灯在制造过程中被使用。
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2. Themercury arclamps were replaced by moreenergy-efficient alternatives.
水银弧灯被更高效的替代品所取代。
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3. Themercury arc lamps havebeen banned in many countries due to theirtoxicity.
由于毒性，许多国家已经禁止了水银弧灯的使用。