energy density

简明释义

能量密度

英英释义

例句

1.The new battery technology offers a higher energy density 能量密度 than traditional lithium-ion batteries.

这种新型电池技术提供了比传统锂离子电池更高的能量密度。

2.A higher energy density 能量密度 means that more energy can be stored in a smaller volume.

更高的能量密度意味着可以在更小的体积内储存更多的能量。

3.Engineers are developing materials with high energy density 能量密度 for use in electric vehicles.

工程师正在开发用于电动车辆的高能量密度材料。

4.The energy density 能量密度 of biofuels is often lower than that of fossil fuels.

生物燃料的能量密度通常低于化石燃料。

5.Researchers are focusing on increasing the energy density 能量密度 of solar panels to improve efficiency.

研究人员正专注于提高太阳能电池板的能量密度以提高效率。

作文

In the modern world, where energy consumption continues to rise, understanding concepts like energy density is crucial for developing sustainable solutions. Energy density refers to the amount of energy stored in a given system or region of space per unit volume or mass. This concept is particularly significant in fields such as physics, engineering, and environmental science, as it helps us evaluate the efficiency of various energy sources. For instance, fossil fuels such as coal, oil, and natural gas have high energy density, meaning they can produce a large amount of energy from a relatively small amount of material. This characteristic has made them the dominant energy sources for decades. However, the environmental impact of burning these fuels is profound, leading to pollution and climate change. Therefore, while their energy density makes them attractive, the consequences of their use compel us to seek alternatives.On the other hand, renewable energy sources like solar, wind, and hydroelectric power generally have lower energy density. For example, solar panels convert sunlight into electricity, but the energy density of sunlight is significantly lower compared to that of fossil fuels. This means that to generate the same amount of energy, we would need a larger area covered with solar panels compared to the space required for fossil fuel extraction and combustion. The challenge lies in improving the energy density of renewable sources to make them more viable alternatives to fossil fuels. Innovations in battery technology, such as lithium-ion batteries, are a step in this direction. These batteries store energy efficiently and have a relatively high energy density, allowing for better performance in electric vehicles and renewable energy storage systems. Moreover, the concept of energy density also extends to food sources. Different foods provide varying amounts of energy based on their caloric content. For example, fats have a higher energy density compared to carbohydrates and proteins. Understanding this can help individuals make informed dietary choices to maintain a balanced energy intake. In conclusion, the term energy density encapsulates a critical aspect of energy production and consumption. As we strive for a sustainable future, enhancing the energy density of renewable energy sources and understanding its implications in various contexts will be vital. By prioritizing research and development in this area, we can work towards a cleaner, more efficient energy landscape that meets the needs of our growing population while preserving the environment for future generations.

在现代社会，随着能源消费的不断上升，理解像能量密度这样的概念对于开发可持续解决方案至关重要。能量密度是指在给定的系统或空间区域内，每单位体积或质量所储存的能量。这一概念在物理学、工程学和环境科学等领域尤为重要，因为它帮助我们评估各种能源的效率。例如，煤、石油和天然气等化石燃料具有高能量密度，这意味着它们可以从相对少量的物质中产生大量的能量。这一特性使得它们在几十年里成为主导能源。然而，燃烧这些燃料所带来的环境影响深远，导致了污染和气候变化。因此，尽管它们的能量密度使得它们具有吸引力，但使用它们的后果迫使我们寻找替代品。另一方面，太阳能、风能和水电等可再生能源通常具有较低的能量密度。例如，太阳能电池板将阳光转化为电能，但阳光的能量密度显著低于化石燃料。这意味着为了产生相同数量的能量，我们需要更大面积的太阳能电池板，而不是化石燃料提取和燃烧所需的空间。挑战在于提高可再生能源的能量密度，以使其成为化石燃料的更可行替代品。电池技术的创新，例如锂离子电池，正朝着这个方向迈出一步。这些电池高效地储存能量，并且具有相对较高的能量密度，使得电动车和可再生能源储存系统的性能更好。此外，能量密度的概念也延伸到食品来源。不同的食物根据其热量含量提供不同的能量。例如，脂肪的能量密度高于碳水化合物和蛋白质。理解这一点可以帮助个人做出明智的饮食选择，以维持平衡的能量摄入。总之，能量密度这一术语概括了能源生产和消费的一个关键方面。在我们努力实现可持续未来的过程中，提高可再生能源的能量密度以及理解其在各个背景下的影响将至关重要。通过优先考虑这一领域的研究和开发，我们可以朝着一个更清洁、更高效的能源格局迈进，以满足我们日益增长的人口需求，同时为未来几代人保护环境。