frictional drag

简明释义

摩擦阻力

英英释义

例句

1.A smoother surface can significantly lower frictional drag in fluid dynamics.

更光滑的表面可以显著降低流体动力学中的摩擦阻力。

2.Engineers are constantly looking for ways to reduce frictional drag in car designs.

工程师们不断寻找减少汽车设计中摩擦阻力的方法。

3.In swimming, reducing frictional drag is crucial for faster times.

在游泳中，减少摩擦阻力对更快的时间至关重要。

4.The boat's hull was streamlined to decrease frictional drag on the water.

船体经过流线型设计，以减少水中的摩擦阻力。

5.The design of the airplane wings minimizes frictional drag to improve fuel efficiency.

飞机翼的设计最小化了摩擦阻力以提高燃油效率。

作文

Friction is a force that opposes the relative motion between two surfaces in contact. In various fields of science and engineering, understanding the concept of frictional drag (摩擦阻力) is crucial for optimizing performance and efficiency. This term refers to the resistance experienced by an object moving through a fluid or along a surface due to friction. Whether it’s a car racing on a track, an airplane soaring through the sky, or a swimmer gliding through water, frictional drag plays a significant role in determining speed and energy consumption.In the automotive industry, engineers strive to minimize frictional drag (摩擦阻力) to enhance fuel efficiency and overall vehicle performance. When a car moves, it encounters air resistance, which is a form of frictional drag (摩擦阻力). The design of the vehicle's body, including its shape and surface texture, significantly impacts the amount of drag experienced. Streamlined shapes reduce turbulence and allow air to flow smoothly over the vehicle, thereby decreasing frictional drag (摩擦阻力). Consequently, manufacturers invest heavily in wind tunnel testing and computational fluid dynamics simulations to optimize designs before production.Similarly, in aviation, frictional drag (摩擦阻力) is a critical factor in aircraft design. As planes fly at high speeds, they encounter air resistance that can slow them down. Engineers aim to create wings and fuselage shapes that minimize frictional drag (摩擦阻力), allowing for greater fuel efficiency and improved performance. Innovations such as winglets and smooth surface coatings have been developed to reduce drag and enhance aerodynamic efficiency. In aquatic environments, swimmers also face the effects of frictional drag (摩擦阻力). The resistance encountered while swimming can significantly impact performance. Competitive swimmers often wear specially designed swimsuits that reduce frictional drag (摩擦阻力) by using materials that create less resistance in water. Additionally, proper technique and body positioning can help minimize drag, allowing swimmers to move more efficiently through the water.The concept of frictional drag (摩擦阻力) extends beyond transportation and sports. It also has applications in various engineering fields, including civil engineering and material science. For example, the design of bridges and buildings must consider frictional drag (摩擦阻力) when accounting for wind loads and other forces acting on structures. Materials used in construction can be selected based on their frictional properties to ensure stability and durability under different conditions.In conclusion, frictional drag (摩擦阻力) is a fundamental concept that affects many aspects of our daily lives, from the vehicles we drive to the sports we play. By understanding and minimizing this type of resistance, engineers and designers can improve performance, enhance safety, and increase efficiency across various fields. As technology advances, the methods for reducing frictional drag (摩擦阻力) continue to evolve, leading to innovations that push the boundaries of what is possible in transportation, sports, and engineering.