名词
中文翻译：尺寸分级
同义词：
['scale', 'gradation', 'dimension']
例句：
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1.The engineer graded the materials according to their strength.
工程师根据材料强度进行分级。
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2.The company has developed a new system for size grading of its products.
该公司开发了一种新的产品分级系统。
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3. The grading is based on the weight and size of the grains.
分级是基于谷物的重量和大小。