名词
中文翻译：暗化率
同义词：
['darkening', 'darkening rate例句：1. The darkening rate of the paint has increased significantly.（油漆的暗化率已经显著增加。）2. This method can effectively reduce the darkening rate of the paint.（这种方法可以有效地降低油漆的暗化率。）']
例句：
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1. The darkening rate of the paint has increased significantly.
油漆的暗化率已经显著增加。
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2. This method can effectively reduce the darkening rate of the paint.
这种方法可以有效地降低油漆的暗化率。
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3.The darkening rate of the paint is directly related to the quality of the pigments used.
油漆的暗化率与使用的颜料质量直接相关。