| 单词 | mercury-vapor lamp |
| 例句 | A red postage stamp looks greenish gray in the green light of a mercury-vapor lamp. Common Science At night a large mercury-vapor lamp in the center of the room, supplemented by a number of well-placed incandescent electric lights, gives ample illumination. Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man In ordinary photographic printing tungsten lamps are widely used, but in blue-printing the white flame-arc and the mercury-vapor lamp are generally employed. Artificial Light Its Influence upon Civilization A person's face looks ghastly by the greenish light of a mercury-vapor lamp. Common Science |
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