This paper provides a test to show the effects of public transportation technology and priority in energy conserving and exhaust reducing.
本文对公交优先技术和政策在节约能源，减少排放等方面的效果进行了对比试验。
The expander can reduce exergy loss in pressure reducing process, and the utilization of cryogenic exergy of air-powered engine exhaust is useful to improve the total energy efficiency.
在能量转移系统中，应该采用容积膨胀减压方式减少减压环节的可用能损失；合理利用低温排气的冷量火用可以提高气动发动机能量转移系统的总能量效率。
With the energy sources and environment problem becomes increasingly prominent, the realization of energy saving and exhaust reducing has important significance.
随着能源和环境问题的日益突出，实现节能减排具有重要的现实意义。
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