These sensors only need very few energies, pass the data by the relay way through the radio wave from a sensor to another, therefore they communicate with an extremely high efficiency.
这些传感器只需很少的能量，以接力的方式通过无线电波将数据从一个传感器传到另一个传感器，所以它们的通信效率非常高。
Therefore, the high-speed railway construction enterprises must carry out the project cost control in order to ensure economic efficiency.
因此，高速铁路施工企业必须进行项目成本控制，才能保证经济效益。
Combustion reactions in a gas turbine are processes of high irreversibility, and therefore of lowe exergy efficiency.
燃气轮机中的燃烧反应是一种高度不可逆的过程，因此效率较低。
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