名词
中文翻译：长度分级
同义词：
['length classification', 'grade lengths', 'grading of lengths']
例句：
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1. The company has adopted a new system for length grading in its products.
该公司已采用新系统对其产品进行长度分级。
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2. In the construction industry, length grading is crucial for ensuring structural integrity.
在建筑业中，长度分级对于确保结构完整性至关重要。
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3.The engineer must carefully measure and grade the materials to ensure they meet the required standards.
工程师必须仔细测量和分级材料，以确保它们符合所需标准。