英语释义

1. the amount of energy (as in a beam of radiation) per unit volume

片语

energy level density能级密度

energy flux density[核]

energy flux density vector能流密度矢量

energy spectral density密度

radiant energy flux density辐射能通量密度

energy band density能带密度

average energy flow density平均能流密度

energy flow density能流密度

英汉例句

• in the early 1990s, such batteries had an energy density of about 100 watt-hours per litre.

  在1990年代早期，这种电池每升的能量密度是大约100瓦时。

• 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。

• if dark energy density decreased over time, the acceleration rate of universal expansion would decline and potentially cease if the pressure/density ratio reached -1/3.

  如果暗能量的密度随时间降低，宇宙的膨胀速率将出现下降，如果其压力/密度比达到-1/3，那么宇宙的膨胀甚至会出现停滞。

• the stability of the new materials suggests a way to increase energy density at the pack level, chamberlain says.

  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。

• 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。

• on production runs, random batches of batteries are tested for temperature, efficiency, energy density and output.

  但在生产流水线上，随机抽取批量的电池接受温度、效能、能量密度及输出量测试。

• isobutanol, however, can be sent through these pipelines, and its energy density is close to that of gasoline.

  然而，异丁醇却可以利用这些管线来运输，另外它的能量密度也与汽油相当。

• 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。

• 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。

• but for anything much bigger, the energy density of aviation fuel still looks to be unbeatable.

  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。

• 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。

• 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。

• 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）。

• fast food outlets should reduce the energy density of their menus as well as their portion sizes, the scientists said.

  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。

• 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。

• diesel fuel has a higher energy density than gasoline, so a diesel engine gets better mileage.

  柴油比汽油能量密度更高，所以柴油发动机行程更长一些。

• increasing the operating voltage will boost the energy density of the composite significantly.

  增加运行电压将能显着提高这种复合材料的能量密度。

• rather, it's putting the concept of energy density into practice to help with your weight loss.

  实际上，这是将能量密度的理念融入实践，帮助人们减肥。

• low energy density means there are few calories in a lot of food.

  而低能量密度意味着食物量虽大卡路里含量却很低。