The onset temperature difference of thermoacoustic Stirling prime movers is a very important parameter for utilizing low quality heat energy.
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 results show that the diurnal variation of leaf-air temperature difference varies under different soil moisture conditions, the low soil moisture results in large leaf-air temperature difference.
结果表明：水稻叶气温差在不同的土壤水分条件下表现出不同的日变化规律，较低的土壤水分导致了较高的叶气温差；
The interlaced heat pump flow has a total temperature difference that is lower than other heat pump flows and can be applied to the low - temperature evaporation for the heat - sensitive materials.
间隔式多效热泵流程不但可以大幅节能，减少总温差费用支出，还能在更多效保持低温水平，非常适于热敏性物料的低温蒸发浓缩。
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