根据规定，每位车主都必须买转化装置，减少空气污染。
According to regulations, every car owner should buy a device to decrease air pollution.
逆变器主电路的可靠性是变频器等功率转化装置安全合理使用的保证。
The reliability in power circuit of inverter is assurance for VFD and other power transfer application.
热声机械作为一种新型的能量转化装置，讨论其起振温差对于利用低品位能源具有非常重要的意义。
The onset temperature difference of thermoacoustic Stirling prime movers is a very important parameter for utilizing low quality heat energy.
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