名词
中文翻译：劣质混合料
同义词：
['poor mix', 'poor blend', 'inferior aggregate', 'substandard aggregate']
例句：
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1. The construction company was fined for using poorly-graded aggregate in their projects.
建筑公司因使用劣质混合料而受到罚款。
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2. The engineer recommended using a better quality aggregate to improve the strength of the concrete.
工程师建议使用更好的质量的混合料来提高混凝土的强度。
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3.The project manager insisted on using only high-quality aggregate to ensure the durability of the building.
项目经理坚持只使用高质量的混合料以确保建筑物的耐用性。