这是通过一个称为焦耳加热过程，看到的电流通过发热导体完成。

This was done through a process called Joule heating, which sees electrical currents pass through a heat-generating conductor.

youdao

在大部分的生物质燃料（木材，稻草）已加热的10月16日兆焦耳ragne价值/公斤，而液体燃料（柴油，汽油），具有的较高的热值。

The most of the biomass fuels (wood, straw) has heating value in the ragne of 10-16 MJ/kg, whereas liquid fuel (diesel, gasoline) posses higher heating value.

youdao

We use a liquid helium. And so in order to make a liquid helium, you can't take helium at room temperature and do this, because if you did, you would just heat it up, because the room temperature is above the inversion temperature, so Joule-Thomson would heat up the helium.

为了得到液氦,不能再常温,做这个实验,否则就是加热氦气，因为室温高于它的转变温度,所以焦耳-汤姆孙，实验会加热氦气。

麻省理工公开课 - 热力学与动力学课程节选