The measurements show that the airfoil blade fan prevails over the plate one in the aspects of total pressure efficiency, stable operation range and high efficient operation range.

试验结果表明机翼型叶片在全压效率、稳定运行范围及高效运行范围比相应的板型叶片具有优越性；

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Consumers and business purchasing agents can now easily compare prices of products and services proffered by merchants and suppliers and apply pressure for more efficiency and lower costs.

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General secretary of the University and College Union Sally Hunt said the higher education system was already creaking under the pressure of government efficiency savings and the planned cuts would be a devastating blow.

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As conventional photovoltaic module prices plunged, thin-film companies found themselves under increasing pressure to raise the efficiency of their products and lower manufacturing costs to remain competitive.

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