以损失数作为目标函数来表征该热力学过程的不可逆程度，分析了管道内对流换热过程中的损。

The exergy loss number is used in this paper as the objective function to indicate the irreversibility of the thermodynamic process.

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玛丽卡•霍兰德：一些科学家就此进行了种种推测，他们认为实际上海冰的消融已经达到了不可逆转的程度，或者与之非常接近。

Marika Holland: So there’s been a lot of speculation from some scientists that we could have already passed a tipping point, or be close to a tipping point.

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与此相反，课题组的结论是，由二氧化碳过高引起的全球变暖“在很大程度上是不可逆转的，即使在停止排放的1000年之后也不能恢复正常。”

Instead, the team concluded, warming tied to higher CO2 "is largely irreversible for 1, 000 years after emissions stop."

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