Most historians would consider the 1860s to be the birth of modern nutrition — this was around when German researchers pioneered the use of room-sized devices called calorimeters.

大多数历史学家认为 19 世纪 60 年代是现代营养学的诞生——大约在那时，德国研究人员率先使用了称为计的房间大小的设备。

A bomb calorimeter can tell us how much  energy is stored in that food sample, but this is the key thing, and I did not  realize this until I was researching it.

一个弹式器能告食物样本中储存了多少能，但关键在于， 这一点直到研究时才识到。

The reason why this is such a landmark is because some people armed with all this data that things like the calorimeter had produced came in and added, created computer models.

之所以这具有如此重要的里程碑义， 是因为一些人利用圆计等设备产生的所有数据，创建了计算机模型。

The calorimeter walls and the thermometer were heated too, resulting in some of the produced heat not being accounted for.

卡路里计的壁和温度计也被加了，导致产生的一部分没有被计入。

They're not using a bomb calorimeter to find out exactly how many calories in that food.

他并没有使用炸弹计来精确测那份食物中的卡路里含。

A calorimeter can be fancy and an expensive piece of hardware, or it can be simple.

一个卡路里计可以是高端且昂贵的硬件设备，也可以很简单。

For a quick simple method, the calorimeter got us pretty close to the calculated value.

对于一个快速简单的方法，仪已经让非常接近计算值了。

The roof will be the calorimeter.

屋顶将是计。

They put those in the bomb calorimeter and  they got a starting point for the calories.

他把这些物质放入弹式计中，得到了的初始数据。

Yeah, one of the early things that came out of this that was really groundbreaking was called the cone calorimeter.

是的，早期出现的一个真正开创性的东西叫做圆计。

The problem with bomb calorimeters is that  they burn foods to completion, but that's not what happens in the body.

炸弹器的问题在于它将食物完全燃烧，但这并非人体内的实际情况。

And the cone calorimeter is essentially like a vent hood, a giant vent hood that has a ton of sensors attached to it.

而圆计基本上就像一个排烟罩，一个装有很多传感器的巨大排烟罩。