生产实践表明：该系统诊断正确，修改迅速。
The practice showed that the diagnoses were correct, the revising was fast.
生产实践表明，本系统有较高的精度和可靠性。
The result of practice showed that the system has high accuracy and reliability.
生产实践表明，改造后的系统能够满足炼钢生产的需求。
The practice shows the system after modification has meet the requirement of steel - making production.
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