名词
中文翻译：黑度计
同义词：
['blackness meter', 'blackness gauge']
例句：
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1.The nigrometer was used to measure the depth of the water.
黑度计用于测量水深。
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2. The engineer used the nigrometer to check the quality of the paint.
工程师使用黑度计检查油漆的质量。
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3. The nigrometer was used to determine the color temperature of the room.
黑度计被用来测定房间的颜色温度。