It was thrilling to have managed such a steep climb in the heat - plus we now had an equally steep downhill stretch to look forward to.

能在酷热中登上如此陡峭的山坡是一件很刺激的事情，加上我们还面对着同样长而陡的下坡路。

youdao

q Work is zero. Delta u is w plus q, work plus heat. This is zero, this isn't.

功是零，△U是w加，功加上热量，这个是零。

麻省理工公开课 - 热力学与动力学课程节选

U It's u, because u is to q plus w right, heat and work, but it's adiabatic. So there's no heat, exchange with the environment, and it's constant volume, so there's no p dV work, right.

什么是零？是U，因为,等于q加w，热量和功，但这是绝热的，所以系统与环境间没有热量交换；,同时它是灯体的，所以也没有pdV形式的功。

麻省理工公开课 - 热力学与动力学课程节选

Its spatial recognition software, plus heat sensors and proprietary algorithms, analyze customer movements.

WSJ: Spying on Your Buying | Marvels

It is more likely that cycling combined with the dehydrating effects of a ten-hour plane trip plus a heat wave threw his electrolytes out of balance and triggered an event.

FORBES: Hidden Dehydration Danger

Breville, maker of the Juice Fountain Plus featured in the juicing documentary, says its machines generate insignificant heat (about two degrees Fahrenheit), which doesn't diminish nutrients in the juice.

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