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关注：1
2013-05-23 12:21
求翻译：Air-source heat pumps are inexpensive relative to other heat pump systems. However, the efficiency of air-source heat pumps decline when the outdoor temperature is very cold or very hot; therefore, they are only really applicable in temperate climates.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
Air-source heat pumps are inexpensive relative to other heat pump systems. However, the efficiency of air-source heat pumps decline when the outdoor temperature is very cold or very hot; therefore, they are only really applicable in temperate climates.
问题补充： |
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2013-05-23 12:21:38
空气源热泵是廉价的相对其它热泵系统。然而，空气源热泵的效率下降，当室外温度极冷或极热，因此，他们只有在温带气候真的适用。
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2013-05-23 12:23:18
气源热泵是廉价相对于其他热泵系统。 然而,对效率的气源热泵的室外温度下降时是很冷或非常热;因此,他们是唯一真正适用在温带气候。
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2013-05-23 12:24:58
正在翻译，请等待...
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2013-05-23 12:26:38
空气源热泵价格低廉，相对于其他热泵系统。不过，空气源热泵的效率下降时室外温度是非常寒冷或酷热的 ；因此，它们只是在温带气候很适用。
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2013-05-23 12:28:18
特别是如何通过使用可再生材料和清洁自然源构建新可持续生态建筑与环境和谐
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