Like fats, sweets are typically high in energy density.
和脂肪一样，甜食也是典型的高能量密度食品。
And they must solve problems with the energy density of batteries.
他们还需解决电池的能量密度问题。
Grapes have a low energy density - 1 cup of grapes has about 104 calories.
葡萄的能量密度低，一杯葡萄含大约104卡路里。
Raisins have a high energy density - 1 cup of raisins has about 434 calories.
葡萄干能量密度高，一杯葡萄干含大约434卡路里。
Three main factors play a role in what makes food high or low in energy density.
决定食物能量密度高低的因素主要有三个。
The first step is knowing which foods are better options when it comes to energy density.
谈到能量密度第一步即应了解哪些食品更适合我们选用。
Simply put, energy density is the number of calories (energy) in a specific amount of food.
简单讲，能量密度指特定食物量中的卡路里(能量)含量。
Here's a look at energy density by the categories in the Mayo Clinic Healthy Weight Pyramid.
下面来看看Mayo诊所健康体重金字塔里各类食物的能量密度吧。
Increasing the operating voltage will boost the energy density of the composite significantly.
增加运行电压将能显著提高这种复合材料的能量密度。
As a fuel, ethanol has a lower energy density and therefore needs more of it to do the same job.
作为一种燃料，乙醇的能量密度更低，所以需要消耗更多的量来完成同样的工作。
The pure magnesium can then be used as a fuel (its energy density is about ten times that of hydrogen).
到那时纯镁可用作燃料(其能量密度大约是氢的十倍)。
Lithium is the third-lightest element on the periodic table, which allows for far greater energy density.
锂是元素周期表第三“轻”的元素，这使得锂具备更高的能量密度。
Coal from this region is low in sulphur, and so burns more cleanly, but has a relatively low energy density unless treated.
该区域的煤含硫量低，也因此更为清洁，但是在处理前能值(energy density)相对较低。
The researchers think they have devised a biofuel that has a 40% higher energy density than ethanol, that repels water and that can be made relatively speedily.
研究人员们认为设计出了一种比乙醇的能量密度高出40%的生物燃料，而且它排斥水并能在制造速度上相对快捷。
Electrolyte was one of the key points which made rechargeable lithium ion batteries with high power and energy density, long cycling life and desirable safety.
电解质是制备高功率密度和高能量密度、长循环寿命和安全性能良好的锂离子电池的关键材料之一。
There is no realistic prospect for widespread electric air travel: the jet engines on aircraft need the high-energy density that only chemical fuels can provide.
广泛的以电力为驱动的空中旅行很不现实：飞机发动机需要高密度的能量，而这些只有化学燃料才可提供。
Turner thinks dark energy is the biggest mystery of them all—and quite literally, since physicists predict that it makes up 74 percent of energy density in the universe.
Turner认为，说暗能量是所有物质中最神秘的，一点都不夸张。科学家估计暗能量占宇宙能量密度的74%。
The positive electrodes are often made from lithium iron phosphate. Corvus, however, USES lithium nickel manganese cobalt (NMC) because it provides a greater energy density.
锂电池的正极一般是用磷酸锂铁制作，而乌鸦公司却使用能量密度更好地镍钴锰酸锂来制作锂电池正极。
As a biofuel, ethanol is relatively easy to make, but it has a lower energy density than gasoline and can't be transported through existing pipelines designed for petroleum fuels.
乙醇作为一种生物燃料相对来说容易生产。但是与汽油相比它的能量密度较低，而且不能够通过现有的化石燃料管线来运输。
In contrast, fruit juices and dried fruits are concentrated sources of natural sugar and therefore have a high energy density - more calories - and they don't fill you up as much.
相较而言，水果汁和干制水果是富含天然糖分，因此能量密度高，卡路里高，同时也不容易让人感到饱足。
Oil is found in relatively few places, and its energy density, pumpability and ease of use in internal-combustion engines makes it particularly well suited as a transportation fuel.
储有石油的地方相对较少，因其能量密度、泵送能力及在内燃机上的易用性使其特别适宜成为运输燃料。
Because of this flexibility, researchers hope to develop new electrode materials that can increase the energy density of lithium-ion batteries by a factor of two or more in the future.
因为具有这种弹性，研究者们期待能开发出新的电极材料，未来也许可以把锂离子电池的能量密度提高2倍或以上。
Besides having a high energy density, the long chains of hydrocarbons are also good building blocks for constructing more complex molecules, such as plastics and pharmaceutical drugs.
除含有高能量外，长链碳氢化合物也适合构建更复杂的分子，如塑料和药品。
In a study published in the journal Obesity Reviews, they calculated the average energy density of menus at McDonald's, KFC and Burger King, using nutritional data from the fast food chains' websites.
《肥胖评论》杂志发表了他们的研究结果，他们通过快餐连锁网站上的营养数据计算了麦当劳、肯德基和汉堡王食品的平均能量密度。
This is a low energy-density device, which stores electricity directly by charging two conductive plates with static.
（和电池相比，）这是一种“低能量密度”设备，电能被直接存储在两块静止的导电板上。
Changing lifestyle habits is never easy, and creating an eating plan using the energy-density concept is no exception.
改变生活习惯绝非易事。结合能量密度理念制定饮食计划同样如此。
There were just two problems: it had a lower energy-density than cobalt oxide and suffered from low conductivity, limiting the rate at which energy could be delivered and stored by the battery.
只是存在两个问题：它的储能比钴氧化物要低，而且导电率也较低，这限制了电池释放和存储能量的速度。
There were just two problems: it had a lower energy-density than cobalt oxide and suffered from low conductivity, limiting the rate at which energy could be delivered and stored by the battery.
只是存在两个问题：它的储能比钴氧化物要低，而且导电率也较低，这限制了电池释放和存储能量的速度。
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