The influences of the internal irreversibility and the high-low temperature ratio in isobaric process on the optimal performance of the system are revealed.

同时揭示了内不可逆性及等压过程高低温比值对系统优化性能的影响。

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The effects of temperature, ratio of methanol to water, contact time on the percent conversion of isoflavone were studied.

研究了温度、进料配比以及接触时间对游离型异黄酮转化率的影响。

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But until recently they have suffered from a low power-to-weight ratio, unlike the other sort of room-temperature fuel cell, the temperamental and costly proton-exchange-membrane device, which several firms hope soon to use in motor cars.

ECONOMIST: Clean living in Iceland