他们还需解决电池的能量密度问题。
And they must solve problems with the energy density of batteries.
另一项优势是潮汐的高能量密度。
A further advantage is the high energy density of the tides.
运用能量密度减肥的关键。
决定食物能量密度高低的因素主要有三个。
Three main factors play a role in what makes food high or low in energy density.
问题在于，它们不具备任何接近的能量密度。
The problem is that they don't have anywhere near the energy density.
高能量密度意味着少量食物里含有大量卡路里。
High energy density means that there are a lot of calories in a little food.
和脂肪一样，甜食也是典型的高能量密度食品。
脂肪能量密度高。
而低能量密度意味着食物量虽大卡路里含量却很低。
Low energy density means there are few calories in a lot of food.
葡萄的能量密度低，一杯葡萄含大约104卡路里。
Grapes have a low energy density - 1 cup of grapes has about 104 calories.
当你希望减肥时，目标就是进食低能量密度的食物。
When you're striving for weight loss, the goal is to eat low-energy-dense foods.
增加运行电压将能显著提高这种复合材料的能量密度。
Increasing the operating voltage will boost the energy density of the composite significantly.
葡萄干能量密度高，一杯葡萄干含大约434卡路里。
Raisins have a high energy density - 1 cup of raisins has about 434 calories.
谈到能量密度第一步即应了解哪些食品更适合我们选用。
The first step is knowing which foods are better options when it comes to energy density.
到那时纯镁可用作燃料(其能量密度大约是氢的十倍)。
The pure magnesium can then be used as a fuel (its energy density is about ten times that of hydrogen).
柴油比汽油能量密度更高，所以柴油发动机行程更长一些。
Diesel fuel has a higher energy density than gasoline, so a diesel engine gets better mileage.
简单讲，能量密度指特定食物量中的卡路里(能量)含量。
Simply put, energy density is the number of calories (energy) in a specific amount of food.
这一新材料的稳定性提供了提高能量密度的级别，张伯伦说。
The stability of the new materials suggests a way to increase energy density at the pack level, Chamberlain says.
与铀相比，钍的储藏量更为丰富，能量密度也更高。
Compared to uranium, thorium is far more abundant as well as much more energy-dense.
他解释说：“硅藻生物燃油比普通柴油具有更高的能量密度。”
'Algaes have more energy content than the equivalent diesel fuel,' he explained.
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。
Lithium is the third-lightest element on the periodic table, which allows for far greater energy density.
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。
Changing lifestyle habits is never easy, and creating an eating plan using the energy-density concept is no exception.
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。
Here's a look at energy density by the categories in the Mayo Clinic Healthy Weight Pyramid.
在1990年代早期，这种电池每升的能量密度是大约10 0瓦时。
In the early 1990s, such batteries had an energy density of about 100 watt-hours per litre.
科学家们指出，快餐店不仅要降低食品的能量密度，而且要缩小食品的体积。
Fast food outlets should reduce the energy density of their menus as well as their portion sizes, the scientists said.
新型电池必须在轻小的电池组里储存大量电能，在能量密度上表现出高评分。
The batteries have to store a lot of energy in a small, light package, scoring high in a quality known as energy density.
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。
As a fuel, ethanol has a lower energy density and therefore needs more of it to do the same job.
但是对于任何大型的家伙，化石燃料的所拥有的能量密度看起来仍然是不可打败的。
But for anything much bigger, the energy density of aviation fuel still looks to be unbeatable.
但是乌鸦能源公司使用锂镍钴锰（NMC）合金制作，因为它能产生更大的能量密度。
Corvus, however, uses lithium nickel manganese cobalt (NMC) because it provides a greater energy density.
影响能量摄取的因素包括：份量大小、能量密度、用餐次数及每日消耗的小吃和饮料。
Factors that influence energy intake include portion size, energy density and the number of meals, snacks and drinks consumed each day.
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