No abnormity was found in the metallographical analysis and hardness test.
金相和硬度分析未发现明显异常组织和硬度分布。
Stop the pump to check if there is any abnormity noise or vibration during operation.
在运转中，如发现有异常声响和振动时，应立即停车。
Stop the pump to check if there is any abnormity noise or vibration during operation.
在运转中，如发现有异常声响和振动时，应立即停车。
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