hand lever

简明释义

手柄

英英释义

例句

1.To operate the machine, pull the hand lever 手动杠杆 downwards.

要操作机器，向下拉动手动杠杆。

2.You can easily adjust the tension by turning the hand lever 手动杠杆 clockwise.

你可以通过顺时针旋转手动杠杆来轻松调整张力。

3.The hand lever 手动杠杆 controls the height of the chair.

这个手动杠杆控制椅子的高度。

4.The hand lever 手动杠杆 on the bike helps you shift gears smoothly.

自行车上的手动杠杆帮助你平稳换挡。

5.Pull the hand lever 手动杠杆 to release the brake.

拉动手动杠杆以释放刹车。

作文

In the world of mechanics and engineering, the term hand lever refers to a simple yet effective tool that allows users to exert force and manipulate objects with ease. A hand lever is essentially a rigid bar that pivots around a fixed point, known as the fulcrum. By applying force on one end of the lever, a user can lift or move a significantly heavier load on the other end. This principle of leverage is fundamental in various applications, from everyday tools to complex machinery.The design of a hand lever is straightforward, yet its functionality is profound. For instance, consider a traditional seesaw; it operates on the same principle as a hand lever. When one side is pushed down, the other side rises, demonstrating how force can be amplified through leverage. This concept is not only applicable in playgrounds but also in industrial settings where heavy equipment needs to be operated efficiently.One of the most common examples of a hand lever is found in the form of a manual car jack. When changing a tire, the user must lift the vehicle off the ground. The hand lever mechanism allows the individual to apply a small amount of force to raise a much heavier object, making the task manageable. Without such devices, changing a tire would be a daunting challenge for many.Another practical application of the hand lever can be seen in kitchen utensils, such as a garlic press or a citrus juicer. These tools utilize the principles of leverage to maximize efficiency. By pressing down on the handle, the user can crush garlic cloves or extract juice from fruits with minimal effort. This demonstrates how hand levers simplify tasks and improve productivity in our daily lives.In addition to their physical applications, hand levers also symbolize empowerment and control. In a broader context, the concept of leveraging resources—whether they be time, energy, or skills—can lead to significant outcomes in personal and professional realms. Just as a hand lever amplifies physical force, individuals can harness their capabilities to achieve greater results in various aspects of life.However, it is essential to understand that the effectiveness of a hand lever largely depends on its design and the position of the fulcrum. The closer the fulcrum is to the load, the less effort is required to lift it. This principle can be applied metaphorically in life; by positioning ourselves strategically and optimizing our resources, we can accomplish more with less effort.In conclusion, the hand lever is not merely a mechanical device; it embodies a principle that resonates throughout various fields. Whether in engineering, daily chores, or personal development, the idea of leveraging resources and efforts is invaluable. Understanding how to effectively use a hand lever, both literally and metaphorically, can lead to enhanced efficiency and success in numerous endeavors. As we navigate through challenges, let us remember the power of the hand lever and strive to apply its lessons in our lives.

在机械和工程的世界中，术语手动杠杆指的是一种简单而有效的工具，允许用户轻松施加力量和操纵物体。手动杠杆本质上是一根围绕固定点（称为支点）旋转的刚性杆。通过在杠杆的一端施加力量，用户可以在另一端提升或移动显著更重的负载。这种杠杆原理在各种应用中都是基础，从日常工具到复杂的机械设备。手动杠杆的设计简单明了，但其功能却深远。例如，考虑一下传统的跷跷板；它的运作原理与手动杠杆相同。当一侧被压下时，另一侧会上升，展示了如何通过杠杆来放大力量。这个概念不仅适用于游乐场，还适用于工业环境，在那里需要高效操作重型设备。最常见的手动杠杆示例之一是在手动汽车千斤顶中。当更换轮胎时，用户必须将车辆抬离地面。手动杠杆机制使个人能够施加少量力量以抬起重物，从而使任务变得可管理。如果没有这样的设备，更换轮胎对于许多人来说将是一个艰巨的挑战。手动杠杆的另一个实际应用可以在厨房用具中看到，例如大蒜压榨器或柑橘榨汁器。这些工具利用杠杆原理来最大化效率。通过按下手柄，用户可以以最小的努力压碎大蒜瓣或从水果中提取果汁。这表明手动杠杆如何简化任务并提高我们日常生活中的生产力。除了它们的物理应用外，手动杠杆还象征着赋权和控制。在更广泛的背景下，利用资源的概念——无论是时间、精力还是技能——都可以在个人和职业领域带来重大成果。正如手动杠杆放大物理力量一样，个人可以利用自己的能力在生活的各个方面取得更大的结果。然而，重要的是要理解，手动杠杆的有效性在很大程度上取决于其设计和支点的位置。支点离负载越近，提升它所需的努力就越少。这个原则在生活中可以隐喻地应用；通过战略性地定位自己和优化我们的资源，我们可以以更少的努力完成更多。总之，手动杠杆不仅仅是一种机械设备；它体现了一种在各个领域都有共鸣的原则。无论是在工程、日常琐事还是个人发展中，利用资源和努力的想法都是无价的。了解如何有效地使用手动杠杆，无论是字面意义上还是隐喻意义上，都可以在众多努力中带来更高的效率和成功。当我们应对挑战时，让我们记住手动杠杆的力量，并努力在生活中应用它的教训。