名词
中文翻译：正常分级
同义词：
['norm', 'standard grading system']
例句：
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1.The normal gradation of the material is crucial for its durability.
材料的正常分级对其耐用性至关重要。
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2. The company's new product line follows a normal gradation of features and pricing.
该公司的新产品线遵循了功能和定价的正常分级。
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3.The normal gradation of the data was used to optimize the algorithm.
数据的正常分级被用来优化算法。