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1.The coal quality control system is crucial for ensuring the safety of the mine.
煤炭质量控制系统对于确保矿井安全至关重要。
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2. The company has implemented stricter coal quality control measures to improve efficiency.
该公司已实施更严格的煤炭质量控制措施以提高效率。
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3.The coal quality control lab is equipped with advanced equipment to analyze the coal's properties.
煤炭质量控制实验室配备了先进的设备来分析煤炭的性质。