propellor

简明释义

英[prəˈpelə(r)]美[prəˈpelər]

n. [航][船] 螺旋桨；推进者；[航][船] 推进器

英英释义

单词用法

同义词

反义词

例句

1.Equipped to float with impermeable canvas skirts, these tanks were to propel themselves to the beach with an AD hoc propellor and then resume normal operation.

这些坦克车下截设有不透水帆布围裙，以便漂浮，并特设螺旋桨，以便向海滩推进，登陆之后即可照正常操作。

2.These analysis results are references for both new type of structure design and the research on characters of fluid dynamics of propellor.

分析结果可供变螺距螺旋桨的新型结构设计和流体动力特性研究参考。

3.The guidance system consisted of propellor in the nose.

制导系统包括螺旋桨的鼻子。

4.The outer wings, tail and propellor have been removed from the aircraft.

这架飞机的外翼、机尾和螺旋桨已经被拆除了。

5.The front and back propellor turn clockwise, while the left and right propellors spin counter-clockwise.

前后两个推进器顺时针旋转，而左右两个则逆时针旋转。

6.Once it has arrived at the airport and enters onto the tarmac, it can fold down its electrically powered wings, engage its rear-facing propellor and take off down the runway.

一旦它抵达机场停机坪，它就可以展开翅膀，利用其后面的螺旋桨在跑道上起降。

7.The speed of the propellor that opposes the desired direction is increased.

相对于想要飞行方向的那个推进器的速度得增加。

8.Example: to fly forward, the back-propellor has to turn faster.

例如：想要往前飞，后面的推进器必须转得更快。

9.Once it has arrived at the airport and enters onto the tarmac, it can fold down its electrically powered wings, engage its rear-facing propellor and take off down the runway.

一旦它抵达机场停机坪，它就可以展开翅膀，利用其后面的螺旋桨在跑道上起降。

10.The engineer designed a new propellor for better thrust.

工程师设计了一种新的螺旋桨以获得更好的推力。

11.A damaged propellor can significantly reduce a vessel's speed.

损坏的螺旋桨会显著降低船只的速度。

12.He adjusted the angle of the propellor to improve efficiency.

他调整了螺旋桨的角度以提高效率。

13.The propellor on the airplane started spinning before takeoff.

飞机起飞前，螺旋桨开始旋转。

14.The boat's propellor created a strong wake as it sped across the lake.

船的螺旋桨在湖面上快速行驶时产生了强烈的波浪。

作文

The concept of motion is fundamental to many aspects of our lives, whether it's the movement of vehicles on roads or the flight of aircraft in the sky. One crucial component that facilitates this motion in watercraft and aircraft is the propellor. A propellor is a device with blades that rotates to create thrust, allowing boats to move through water and planes to soar through the air. Understanding how a propellor works can deepen our appreciation for engineering and design in transportation. In the case of boats, the propellor is typically located at the rear of the vessel. When the engine powers the propellor, it spins rapidly, pulling water in from the front and pushing it out behind. This action generates forward motion, propelling the boat ahead. The efficiency of a propellor can significantly affect the speed and fuel consumption of a boat. Different designs and sizes of propellors can lead to variations in performance, which is why engineers spend considerable time testing and optimizing these components. In aviation, the role of the propellor is equally vital. Aircraft equipped with propellors utilize them to generate lift and thrust. The propellor spins at high speeds, creating a difference in air pressure between the front and back of the blades. This difference in pressure pulls the aircraft forward, while the shape of the blades helps to lift the plane off the ground. Modern advancements have led to the development of more efficient and quieter propellors, enhancing the overall performance of aircraft. The use of propellors is not limited to just boats and planes; they are also found in various machinery and devices, including drones and submarines. In drones, for example, multiple small propellors work together to provide stability and control during flight. Each propellor must be precisely calibrated to ensure that the drone can maneuver effectively and respond to pilot commands. Similarly, submarines use propellors to navigate underwater, allowing for stealthy and efficient travel beneath the surface. Understanding the mechanics of a propellor also requires knowledge of physics. The principles of aerodynamics and hydrodynamics play a significant role in how well a propellor performs. For instance, the angle at which the blades are set, known as the pitch, affects how much water or air is displaced, thus influencing speed and efficiency. Engineers must consider various factors, such as the material of the propellor, its size, and its shape, to optimize performance for specific applications. In conclusion, the propellor is an essential element in the world of transportation, providing the necessary thrust to move vehicles through water and air. Its design and functionality reflect the intricate relationship between engineering and physics. As technology advances, the propellor continues to evolve, leading to more efficient and powerful modes of transport. By understanding the significance of the propellor, we can better appreciate the innovations that drive our modern world forward. In summary, the propellor is not just a simple mechanical device; it is a symbol of human ingenuity and the quest for efficient movement, embodying the spirit of exploration and progress in both marine and aerial domains.

运动的概念是我们生活中许多方面的基础，无论是车辆在道路上的移动，还是飞机在天空中的飞行。推动水面船只和飞机前进的一个重要组成部分是螺旋桨。螺旋桨是一种带有叶片的装置，旋转以产生推力，使船只能够在水中移动，飞机能够在空中翱翔。理解螺旋桨的工作原理可以加深我们对交通运输工程和设计的欣赏。在船只的情况下，螺旋桨通常位于船只的后部。当发动机驱动螺旋桨时，它迅速旋转，从前方吸入水并将其推送到后方。这一动作产生向前的运动，推动船只前进。螺旋桨的效率可以显著影响船只的速度和燃料消耗。不同设计和尺寸的螺旋桨会导致性能的变化，这就是为什么工程师花费大量时间测试和优化这些组件。在航空领域，螺旋桨的作用同样至关重要。配备螺旋桨的飞机利用它们来产生升力和推力。螺旋桨以高速旋转，在叶片的前后产生气压差。这一气压差拉动飞机向前，而叶片的形状有助于将飞机抬离地面。现代技术的进步使得开发出更高效、更安静的螺旋桨成为可能，从而提高了飞机的整体性能。螺旋桨的使用不仅限于船只和飞机；它们还出现在各种机械和设备中，包括无人机和潜艇。例如，在无人机中，多个小型螺旋桨共同工作，以在飞行中提供稳定性和控制力。每个螺旋桨都必须经过精确校准，以确保无人机能够有效操控并响应飞行员的指令。同样，潜艇使用螺旋桨在水下导航，允许其在水面下进行隐秘而高效的旅行。理解螺旋桨的机械原理也需要掌握物理学。空气动力学和水动力学的原理在螺旋桨的性能中起着重要作用。例如，叶片的设置角度，即螺距，会影响排出的水或空气量，从而影响速度和效率。工程师必须考虑各种因素，如螺旋桨的材料、大小和形状，以优化特定应用的性能。总之，螺旋桨是交通运输领域的一个基本元素，为车辆在水和空气中提供必要的推力。它的设计和功能反映了工程与物理之间复杂的关系。随着技术的进步，螺旋桨不断发展，导致更高效和强大的交通方式。通过理解螺旋桨的重要性，我们可以更好地欣赏推动我们现代世界前进的创新。总之，螺旋桨不仅仅是一个简单的机械装置；它是人类聪明才智和追求高效移动的象征，体现了在海洋和航空领域探索与进步的精神。