我们用力很大，于是压缩得很快，打气筒内外热传递的速度，与之相比要慢得多。

You do it so quickly that the heat flow between the inside of the bicycle pump and the outside is too slow compared to the speed at which you compress.

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继动阀用于长管路的末端，使储气筒的 压缩空气快速充满制动气室，如在挂车或半挂车 制动系统中。

The relay valves which are used at the end of long pipelines can quickly fill gas cells with compressed air, for example, in trailer or semitrailer brake systems.

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仔细检查因为空气压缩机贮气筒如果有一个平稳的，根据检查排除。

Check carefully because air compressor air storage tank if there is a flat, according to check out.

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You're taking the air inside of the pump and you're compressing it. You're doing it so fast that there's not enough time for heat to come out of the gas that's inside the pump towards the walls of the pump.

你把空气吸进气筒里并且压缩它,你的动作很快以至于,没有足够的时间让热量,从气筒里面跑出来,传递到气筒壁上。

麻省理工公开课 - 热力学与动力学课程节选