Economy: the Xenon lamp has a service life of 2500 hours, 10 times that of a general halogen lamp, showing worthwhile value.
经济：氙气灯使用寿命长达2500小时，是一般卤素大灯的十倍，经济合算。
Economy: the Xenon lamp has a service life of 2500 hours, 10 times that of a general halogen lamp, showing worthwhile value.
经济：氙气灯使用寿命长达2500小时，是一般卤素大灯的十倍，经济合算。
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