crank arm

简明释义

曲柄臂

英英释义

例句

1.Make sure the crank arm is securely attached before you start cycling.

在开始骑行之前，请确保曲柄臂牢固地固定好。

2.After the ride, I noticed the crank arm was slightly bent.

骑行后，我注意到曲柄臂有些弯曲。

3.The length of the crank arm can affect your cycling posture.

曲柄臂的长度会影响你的骑行姿势。

4.The mechanic adjusted the angle of the crank arm to improve pedaling efficiency.

机械师调整了曲柄臂的角度，以提高踩踏效率。

5.I replaced the old crank arm with a lighter model for better performance.

我用更轻的型号替换了旧的曲柄臂以提升性能。

作文

The bicycle is a remarkable invention that has transformed the way we travel and exercise. One of the essential components of a bicycle is the crank arm, which plays a crucial role in converting the rider's pedaling motion into rotational energy that propels the bike forward. Understanding the function and importance of the crank arm can enhance our appreciation for this simple yet effective mechanism.The crank arm is a lever attached to the bottom bracket of the bicycle frame. When a cyclist pedals, they push down on the pedals, which are connected to the crank arm. This action causes the crank arm to rotate around the bottom bracket, turning the chainring and ultimately driving the rear wheel. The efficiency of this system is vital for smooth and effective cycling.There are typically two crank arms on a bicycle, one for each pedal. They are designed to be symmetrical, allowing for balanced power distribution during pedaling. The length of the crank arm can vary depending on the type of bicycle and the rider's leg length. A longer crank arm can provide more leverage, making it easier to pedal uphill, while a shorter crank arm can allow for faster pedaling speeds on flat terrain.In addition to their mechanical function, crank arms can also impact a cyclist's comfort and performance. If the crank arm is too long or too short for a rider's leg length, it can lead to discomfort and inefficient pedaling. Therefore, choosing the right size of crank arm is essential for optimizing performance and preventing injury.Maintenance of the crank arm is also crucial for ensuring a smooth ride. Regular checks should be made to ensure that the crank arm is securely attached and free from damage. Any signs of wear or looseness should be addressed immediately to prevent accidents or further damage to the bicycle.In conclusion, the crank arm is a vital component of a bicycle that contributes significantly to its functionality. By understanding how the crank arm works and its importance in the overall cycling experience, riders can make informed decisions about their equipment and improve their riding efficiency. Whether you are a casual cyclist or a serious competitor, paying attention to the crank arm can enhance your performance and enjoyment of this wonderful mode of transportation.

自行车是一项了不起的发明，改变了我们的旅行和锻炼方式。自行车的一个重要组成部分是曲柄臂，它在将骑行者的踏板运动转化为推动自行车前进的旋转能量中发挥着至关重要的作用。理解曲柄臂的功能和重要性可以增强我们对这一简单而有效机制的欣赏。曲柄臂是连接在自行车框架底部支架上的一个杠杆。当骑自行车的人踩踏板时，他们向下施加力量，而踏板与曲柄臂相连。这一动作使得曲柄臂围绕底部支架旋转，从而驱动链轮，最终推动后轮。这个系统的效率对于平稳和有效的骑行至关重要。通常，自行车上有两个曲柄臂，每个踏板一个。它们设计成对称形状，使得在踏板时能够均衡地分配力量。曲柄臂的长度可以根据自行车类型和骑行者的腿长而有所不同。较长的曲柄臂可以提供更多的杠杆，使得在上坡时更容易踩踏，而较短的曲柄臂则可以让骑行者在平坦的地形上以更快的速度踩踏。除了机械功能外，曲柄臂还会影响骑行者的舒适度和表现。如果曲柄臂对于骑行者的腿长来说过长或过短，就可能导致不适和低效的踩踏。因此，选择合适的曲柄臂尺寸对于优化性能和预防受伤至关重要。对曲柄臂的维护也对确保顺畅骑行至关重要。应定期检查曲柄臂是否安全固定且没有损坏。任何磨损或松动的迹象都应立即处理，以防止事故或进一步损坏自行车。总之，曲柄臂是自行车的重要组成部分，对其功能性贡献显著。通过了解曲柄臂的工作原理及其在整体骑行体验中的重要性，骑行者可以对他们的装备做出明智的选择，并提高骑行效率。无论你是休闲骑行者还是认真竞争者，关注曲柄臂都可以提升你的表现和享受这种美妙的交通方式。