useful compression ratio

简明释义

有效压缩比

英英释义

例句

1.For video files, a useful compression ratio 有效压缩比 of 10:1 is often ideal for streaming.

对于视频文件，通常理想的有效压缩比 有效压缩比是10:1，适合流媒体播放。

2.When archiving data, it's important to achieve a high useful compression ratio 有效压缩比 to save storage space.

在归档数据时，达到较高的有效压缩比 有效压缩比以节省存储空间是很重要的。

3.The new algorithm boasts a useful compression ratio 有效压缩比 that outperforms previous versions.

新算法的有效压缩比 有效压缩比优于以前的版本。

4.The software provides a useful compression ratio 有效压缩比 that significantly reduces file sizes without losing quality.

该软件提供的有效压缩比 有效压缩比显著减少了文件大小而不损失质量。

5.In image processing, achieving a useful compression ratio 有效压缩比 helps in faster loading times.

在图像处理过程中，实现有效压缩比 有效压缩比有助于更快的加载时间。

作文

In the world of engineering and design, particularly in the fields of automotive and mechanical systems, the term useful compression ratio plays a crucial role in determining the efficiency and performance of engines. The useful compression ratio refers to the ratio of the volume of the combustion chamber when the piston is at the bottom of its stroke to the volume when it is at the top. This ratio is significant because it directly influences the power output of an engine as well as its fuel efficiency. A higher useful compression ratio typically allows for more complete combustion of the air-fuel mixture, which can lead to greater energy production and reduced emissions.To understand the importance of the useful compression ratio, one must first grasp the basic principles of how internal combustion engines operate. When the piston moves down, it creates a vacuum that draws in the air-fuel mixture. As the piston moves back up, this mixture is compressed into a smaller volume. The degree of this compression is what we refer to as the useful compression ratio. If the compression is too low, the engine may not generate enough power, while if it is too high, it can lead to knocking or pre-ignition, which can damage the engine.Moreover, the useful compression ratio varies among different types of engines. For example, gasoline engines typically operate at a lower compression ratio compared to diesel engines. This is because gasoline is more prone to knocking than diesel fuel. Diesel engines, on the other hand, take advantage of a higher useful compression ratio to achieve better thermal efficiency and power output.The relationship between the useful compression ratio and fuel efficiency cannot be overstated. Higher compression ratios generally mean that more energy is extracted from the fuel, leading to better mileage. However, this must be balanced against the risk of engine knock. Engineers often use various techniques, such as fuel additives and advanced ignition timing, to optimize the useful compression ratio without compromising engine safety or performance.In recent years, advancements in technology have allowed for the development of engines with variable compression ratios. These innovative designs enable the engine to adjust its compression ratio based on driving conditions, thus maximizing efficiency and performance. Such technologies underscore the critical nature of the useful compression ratio in modern automotive engineering.In conclusion, the useful compression ratio is a fundamental concept that significantly impacts the performance, efficiency, and longevity of internal combustion engines. Understanding this ratio not only helps engineers design better engines but also informs consumers about the capabilities and limitations of their vehicles. As the automotive industry continues to evolve, particularly with the rise of electric and hybrid vehicles, the principles surrounding the useful compression ratio will remain relevant, guiding the way towards more efficient and sustainable transportation solutions.

在工程和设计的世界中，特别是在汽车和机械系统领域，术语有效压缩比在确定发动机的效率和性能方面发挥着至关重要的作用。有效压缩比是指活塞在行程底部时燃烧室的体积与活塞在行程顶部时的体积之间的比率。这个比率非常重要，因为它直接影响发动机的功率输出以及燃油效率。更高的有效压缩比通常允许空气-燃料混合物的更完全燃烧，从而导致更大的能量产生和更少的排放。要理解有效压缩比的重要性，人们首先必须掌握内燃机操作的基本原理。当活塞向下移动时，会产生一个真空，从而将空气-燃料混合物吸入。当活塞再次向上移动时，这种混合物被压缩到更小的体积。我们所说的压缩程度就是有效压缩比。如果压缩过低，发动机可能无法产生足够的动力，而如果压缩过高，则可能导致敲击或提前点火，这会损坏发动机。此外，有效压缩比在不同类型的发动机之间有所不同。例如，汽油发动机通常在较低的压缩比下运行，而柴油发动机则相对较高。这是因为汽油比柴油燃料更容易发生敲击。而柴油发动机则利用更高的有效压缩比来实现更好的热效率和功率输出。有效压缩比与燃油效率之间的关系不容小觑。更高的压缩比通常意味着从燃料中提取更多的能量，从而提高里程。然而，这必须与发动机敲击的风险进行平衡。工程师们通常使用各种技术，如燃料添加剂和先进的点火时机，来优化有效压缩比，而不会影响发动机的安全性或性能。近年来，技术的进步使得可变压缩比发动机的发展成为可能。这些创新设计使发动机能够根据驾驶条件调整其压缩比，从而最大限度地提高效率和性能。这些技术突显了现代汽车工程中有效压缩比的关键性质。总之，有效压缩比是一个基本概念，对内燃机的性能、效率和寿命有着重要影响。理解这一比率不仅有助于工程师设计更好的发动机，还能使消费者了解他们车辆的能力和局限性。随着汽车工业的不断发展，特别是电动和混合动力汽车的崛起，围绕有效压缩比的原则将继续保持相关性，引导朝着更高效和可持续的交通解决方案迈进。