名词
中文翻译：质量等级
同义词：
['quality standard', 'quality classification']
例句：
-
1.The company has a strict quality grade system in its products.
该公司对其产品有严格的质量等级制度。
-
2. The government introduced a new quality grade for the automobile industry.
政府为汽车工业引入了一个新的质量等级。
-
3.The quality grade of the product is directly related to its market value.
产品的质量和市场价值直接相关。