The results indicate that the most increment of pump assembly efficiency is 9.85% by adjusting blade angle.

结果表明：实施变角经济运行后，泵装置效率最高可提高9.85%；

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The results are significant for decreasing hydraulic loss of discharge passage, pump assembly optimum design and increasing pump assembly efficiency.

成果对减小出水流道水力损失，实现泵装置优化设计，提高泵装置效率有重大意义。

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This paper develops a monitoring alarm system for refrigerator pump assembly line of Haier Group by consulting the research of other domains to reform the manpower mode of which efficiency is low.

我们借鉴其他领域中监控报警系统的成果，为海尔集团开发冰箱抽空流水线的监测与报警系统，以改变当前靠人工进行监测这种耗时耗力效率低下的监测模式。

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