sprag

简明释义

英[spræɡ]美[spræɡ]

n. 制轮木；煤面防护柱

vt. （在斜坡）用制轮木防止（车辆）滑动；用制轮木支撑（车辆）

复 数 s p r a g s

英英释义

单词用法

同义词

反义词

例句

1.Under unfavourable work conditions a dangerous section forms on the inner wing of the joint between sprag and grip, where the stresses are concentrated.

木材抓具的抓爪，在不利工况下的危险截面是位于撑杆与抓爪联结爪耳处的内缘，该处所受应力最大。

2.This paper also introduces sprag overrunning clutch to be applied in transmission system of rotor aero-craft.

还对斜撑超越离合器在直升机传动系统上的应用作了介绍。

3.Under unfavourable work conditions a dangerous section forms on the inner wing of the joint between sprag and grip, where the stresses are concentrated.

木材抓具的抓爪，在不利工况下的危险截面是位于撑杆与抓爪联结爪耳处的内缘，该处所受应力最大。

4.The mechanic used a sprag to prevent the wheel from rolling backwards on the incline.

机械师使用了一个防滑装置来防止轮子在坡道上向后滚动。

5.The bicycle was equipped with a sprag to help with downhill braking.

这辆自行车配备了一个防滑装置，以帮助下坡刹车。

6.The engineer explained how the sprag mechanism works in the transmission system.

工程师解释了防滑装置在传动系统中的工作原理。

7.Using a sprag can significantly reduce the risk of accidents when towing heavy loads.

使用防滑装置可以显著降低拖拉重物时发生事故的风险。

8.In the construction site, they installed a sprag on the crane to ensure safety during lifting.

在建筑工地，他们在起重机上安装了一个防滑装置以确保提升过程中的安全。

作文

In the world of mechanical engineering and design, the term sprag refers to a specific type of device that is used to prevent reverse motion in machinery. This small but crucial component plays a significant role in ensuring the smooth operation of various machines, particularly those that involve rotational movement. Understanding the function of a sprag can help us appreciate the intricacies of mechanical systems and their importance in our daily lives.A sprag is often found in mechanisms such as clutches, brakes, and other devices where it is essential to control the direction of movement. The primary function of a sprag is to allow movement in one direction while preventing it in the opposite direction. This is achieved through a simple yet effective design that utilizes the principles of friction and mechanical advantage.For example, consider a bicycle freewheel mechanism. When you pedal forward, the gears engage, allowing the bike to move forward. However, when you stop pedaling, the sprag mechanism ensures that the rear wheel can continue to spin freely without forcing the pedals to rotate backward. This design not only enhances the efficiency of the bicycle but also improves the rider's comfort and safety.The application of sprag devices extends beyond bicycles; they are also commonly used in automotive transmissions and various industrial machinery. In these contexts, sprags help manage torque and prevent unwanted back-driving, which could lead to mechanical failure or inefficiencies. The reliability of a machine often hinges on the proper functioning of its sprag components, making them indispensable in engineering.Moreover, the concept of a sprag can be metaphorically applied to other areas of life. Just as a sprag prevents reverse motion in machinery, we too must find ways to prevent regression in our personal and professional lives. This could mean setting goals, establishing boundaries, or creating systems that encourage forward momentum while blocking distractions or negative influences.In conclusion, the term sprag encapsulates more than just a mechanical component; it represents a fundamental principle of progress and control. By understanding how sprags function within machines, we can draw parallels to our own lives and the importance of maintaining direction and purpose. As we navigate through various challenges, let us remember the role of the sprag: to keep us moving forward while preventing us from slipping back into old habits or unproductive patterns. Embracing this mindset can lead to greater achievements and a more fulfilling life overall.

在机械工程和设计的世界中，术语sprag指的是一种特定类型的装置，用于防止机器中的反向运动。这个小而关键的组件在确保各种机器的平稳运行方面发挥着重要作用，特别是在涉及旋转运动的机器中。理解sprag的功能可以帮助我们欣赏机械系统的复杂性及其在我们日常生活中的重要性。sprag通常出现在离合器、制动器和其他需要控制运动方向的装置中。sprag的主要功能是允许一个方向的运动，同时防止相反方向的运动。这是通过利用摩擦和机械优势的原理来实现的简单而有效的设计。例如，考虑一下自行车的自由轮机制。当你向前踏板时，齿轮接合，使自行车向前移动。然而，当你停止踏板时，sprag机制确保后轮可以继续自由旋转，而不会迫使踏板向后旋转。这种设计不仅提高了自行车的效率，还改善了骑行者的舒适度和安全性。sprag装置的应用不仅限于自行车；它们也常用于汽车变速器和各种工业机械。在这些情况下，sprag帮助管理扭矩并防止不必要的反向驱动，这可能导致机械故障或效率低下。机器的可靠性往往取决于其sprag组件的正常运行，使其在工程中不可或缺。此外，sprag的概念可以比喻性地应用于生活的其他领域。正如sprag防止机器中的反向运动一样，我们也必须找到方法来防止在个人和职业生活中的倒退。这可能意味着设定目标、建立界限或创建鼓励向前推进的系统，同时阻挡分散注意力或负面影响。总之，术语sprag不仅仅是一个机械组件的代名词；它代表了进步和控制的基本原则。通过理解sprag在机器中的功能，我们可以将其与我们自己的生活进行类比，认识到保持方向和目标的重要性。当我们在各种挑战中航行时，让我们记住sprag的角色：让我们向前移动，同时防止我们滑回旧习惯或无效模式。拥抱这种心态可以带来更大的成就和更充实的生活。