The results show that an appropriate quantity of circulating water exists under certain conditions in the system and decreases with a reduction in the steam gas ratio of the shift reaction.

结果表明，系统在一定条件下存在一较为适宜的循环水量，且此适宜的循环水量随变换反应汽气比的降低而降低。

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The new method has been successfully applied to the optimization of the flowrate of circulating water for the CO shift section in ammonia synthesis.

通过对合成氨变换工段循环热水系统以饱和塔出口半水煤气温度最大为目标函数进行优化计算，证明本文方法是成功的。

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The Bank of Japan has been grappling with unexpected swings in the government bond market since early April, when its new governor, Haruhiko Kuroda, announced a drastic shift in policy aimed at doubling the amount of cash circulating in Japan's economy.

NPR: Japan Gyrations Underline Economy's Vulnerability