hand crank

简明释义

手柄

英英释义

例句

1.He demonstrated how to use the hand crank 手摇曲柄 to operate the old-fashioned coffee grinder.

他演示了如何使用手摇曲柄操作老式咖啡研磨机。

2.In case of a power outage, we have a generator that can be started with a hand crank 手摇曲柄.

在停电的情况下，我们有一台可以用手摇曲柄启动的发电机。

3.To start the old car, you need to use the hand crank 手摇曲柄 to turn the engine over.

要启动这辆老车，你需要使用手摇曲柄来转动发动机。

4.The fisherman used a hand crank 手摇曲柄 to reel in his catch.

渔夫用手摇曲柄把他的鱼线收回。

5.The bicycle features a hand crank 手摇曲柄 mechanism for easy pedaling.

这辆自行车配备了一个手摇曲柄机制，方便骑行。

作文

The concept of a hand crank is often associated with older mechanical devices that require manual operation. A hand crank is essentially a lever or handle that can be turned by hand to generate power or perform a specific function. This simple yet effective mechanism has been used in various applications throughout history, from early automobiles to household appliances. Understanding the significance and functionality of a hand crank allows us to appreciate the ingenuity of past inventions and their impact on modern technology.One of the most notable uses of a hand crank is in early automobiles. Before the advent of electric starters, cars were often equipped with a hand crank to start the engine. Drivers would insert the crank into the front of the vehicle and turn it vigorously to initiate the combustion process. This method required physical strength and skill, as improper cranking could lead to injury or damage to the vehicle. Despite its challenges, the hand crank was a revolutionary tool that allowed people to operate vehicles independently, paving the way for the automotive industry we know today.In addition to automobiles, hand cranks have been utilized in various household devices. For instance, old-fashioned ice cream makers often featured a hand crank mechanism. Families would gather around the machine, taking turns cranking the handle while enjoying each other's company. This social aspect of using a hand crank added a layer of enjoyment to the process of making ice cream, turning it into a cherished family tradition.Moreover, the hand crank has found its place in modern technology, particularly in emergency preparedness tools. Many portable generators and emergency radios are designed with a hand crank feature, allowing users to generate power without relying on batteries or electricity. In situations where access to power is limited, such as during natural disasters, having a hand crank device can be invaluable. It empowers individuals to take charge of their circumstances, providing light, communication, and even the ability to charge small electronic devices.The durability and simplicity of a hand crank make it an appealing option for many applications. Unlike battery-operated devices, which can run out of power and require replacement, a hand crank relies solely on human effort. This not only makes it environmentally friendly but also ensures that it can be used in remote locations where electricity is unavailable. Furthermore, the tactile experience of using a hand crank can evoke nostalgia, reminding us of simpler times when machines were more hands-on and less reliant on technology.In conclusion, the hand crank is a remarkable invention that has stood the test of time. Its versatility spans across various fields, from automotive engineering to household appliances and emergency tools. By understanding the role of the hand crank, we can gain insight into our technological evolution and appreciate the blend of simplicity and functionality in design. As we continue to innovate and develop new technologies, the principles embodied by the hand crank—manual operation, sustainability, and user engagement—remain relevant and important in our pursuit of progress.

手摇曲柄的概念通常与需要手动操作的旧机械设备相关联。手摇曲柄本质上是一个杠杆或把手，可以手动旋转以产生动力或执行特定功能。这种简单而有效的机制在历史上被广泛应用，从早期的汽车到家用电器。理解手摇曲柄的重要性和功能性使我们能够欣赏过去发明的独创性及其对现代技术的影响。手摇曲柄最显著的用途之一是在早期汽车中。在电启动装置出现之前，汽车通常配备有手摇曲柄来启动发动机。司机会将曲柄插入车辆前部，然后用力旋转以启动燃烧过程。这种方法需要体力和技巧，因为不当的摇动可能导致受伤或损坏车辆。尽管面临挑战，手摇曲柄是一种革命性的工具，使人们能够独立操作车辆，为我们今天所知的汽车工业铺平了道路。除了汽车，手摇曲柄还被用于各种家用设备。例如，老式冰淇淋机通常配备有手摇曲柄机制。家庭成员围绕着机器聚集，轮流摇动把手，同时享受彼此的陪伴。使用手摇曲柄的这种社交性质为制作冰淇淋的过程增添了一层乐趣，使其成为一种珍贵的家庭传统。此外，手摇曲柄在现代技术中也找到了自己的位置，特别是在紧急准备工具中。许多便携式发电机和应急收音机都设计有手摇曲柄功能，允许用户在不依赖电池或电力的情况下产生电力。在自然灾害等情况下，当获取电力的途径有限时，拥有一台手摇曲柄设备是非常宝贵的。它使个人能够掌控自己的环境，提供照明、通信，甚至为小型电子设备充电。手摇曲柄的耐用性和简单性使其在许多应用中成为一种吸引人的选择。与电池驱动的设备不同，电池驱动的设备可能会耗尽电力并需要更换，而手摇曲柄完全依赖于人类的努力。这不仅使其环保，而且确保可以在缺乏电力的偏远地区使用。此外，使用手摇曲柄的触觉体验可以唤起怀旧之情，让我们想起更简单的时代，那时机器更具互动性，更少依赖技术。总之，手摇曲柄是一项经受住时间考验的杰出发明。它的多功能性跨越多个领域，从汽车工程到家用电器和应急工具。通过理解手摇曲柄的作用，我们可以深入了解我们的技术演变，并欣赏设计中简单性和功能性的结合。随着我们继续创新和开发新技术，手摇曲柄所体现的原则——手动操作、可持续性和用户参与——在我们追求进步的过程中仍然具有相关性和重要性。