Light source with high luminous efficiency, long-life gas discharge lamp.
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近年来，从节能和环保的观点出发开发成功许多具有高光效、高显色性、长寿命的新型高压气体放电灯。
Recently the new HID lamps with higher luminous efficiency, high color rendition and long life are developed successfully from the viewpoint of energy-saving and environmental protection.
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