Instead of using a mechanical compressor running on electricity, thermal coolers are powered with hot water.
这种冷却机不是用靠电运行的机械压缩机，而是用热水运行的。
This process involves a compressor and with it associated thermal, mechanical and pumping losses, which affect fuel consumption.
这一过程涉及压缩机和与之相关的热，机械和抽水的损失，影响燃料的消耗。
The matching of variable displacement compressor and thermal expand valve is a difficult problem in mobile conditioning system now.
变排量压缩机与热力膨胀阀的配合问题是目前汽车空调系统研究的一个难题。
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