After two men died of heat-related causes in Moscow's metro, a consumer group sued the transit operator to bring down temperatures to the legal maximum of 32 degrees centigrade.
VOA: standard.2010.07.23
And you have this liquid alloy at 600 degrees centigrade, and it turns into a molten salt.
你得到了液态合金,在600度的时候,它就转变成熔融盐。
When you melt them, cesium melts at about 28 degrees centigrade, gold melts at 1063.
当你把它们熔融时,铯在28度就熔化了,金在1063度才熔化。
You ignite the food and burn it, and you see how many degrees centigrade the water gets raised, and that's the measure of calories.
点燃食物使其燃烧,然后观察水的温度上升了多少,就测量了这种食物的卡路里
And if you go back into the 1800's when thermodynamics was starting, there were a zillion different temperatures scales Everybody had their own favorite temperature scale The one that we're most familiar with is the centigrade or Celsius scale where mercury was the substance, and the volume of mercury is the property.
如果你回头看看19世纪温度计,刚开始使用的时候,那时有不计其数的不同温标,每个人都有他们自己最喜欢的温标,我们最熟悉的是,摄氏温标,用水银,作为工作物质,水银的体积是所用的性质。
A kilocalorie, and this is really what we--when people talk about calories, how many calories in food, it's really kilocalories that they're referring to, but that would be the energy required to raise a kilogram of water one degree centigrade.
一千卡,是人们讨论卡路时是真正用的单位,当提起食物中的热量,人们指的是多少千卡,一千卡,是将一千克水提升1℃所需要的热量
Well a calorie technically--and this is again, not something that we would ever quiz you on but I just thought you might be interested to know-- that it's the energy required to raise one gram of water one degree centigrade, and we'll talk in a minute about you might go about measuring that.
理论上一卡路里,我重复下,这不是考试内容,但我想你们会感兴趣,一卡路里,是将一克水提升1℃所需要的热量,过会儿我们会讲如何测量
应用推荐