gearcase

gearcase的音标为["gɪəkeɪs] ，基本翻译为“变速器箱”，速记技巧为：用“ge”代替“gear”快速记忆。

Gearcase这个词的词源可以追溯到古英语中的“gearcas”，意为齿轮箱或齿轮容器。它经历了许多变化形式，如“gear-case”、“gearkas”、“gearkase”等。这个词在现代英语中通常被简化为“gearbox”或“transmission”。

相关单词：

1. Transmission：传动系统，用于将动力从发动机传递到车轮。

2. Gearbox：变速箱，是汽车、飞机等机械中重要的传动部件。

3. Spur Gear：齿形齿轮，是一种常见的传动齿轮，由外径和内径相等的齿组成。

4. Helical Gear：螺旋齿轮，是一种复杂的齿轮，其齿形呈螺旋状，具有更高的效率。

5. Planetary Gear：行星齿轮，是一种复杂的传动装置，由多个齿轮和轴组成，可以改变动力传输的方向和速度。

6. Gear Ratio：齿轮比，指两个齿轮之间的传动比，决定了动力传输的速度。

7. Idler Gear：惰轮，一种不传递动力的齿轮，通常用于改变传动轴的方向。

8. Countershaft：副轴，是传动系统中的一个部件，通常与主轴一起转动，用于分配动力到其他齿轮。

9. Overdrive Gear：超速档齿轮，一种用于提高汽车行驶速度的齿轮装置。

10. Gear Shift：换挡，是指改变车辆的行驶速度和动力输出的操作。

常用短语：

1. gear case

2. gear set

3. gear ratio

4. gearbox

5. tooth gear

6. spur gear

7. helical gear

例句：

1. The gear case of the engine is critical for maintaining the speed and torque of the transmission.

2. The gear set is a crucial component of the transmission system that ensures smooth and efficient operation.

3. The gear ratio determines the speed at which the vehicle travels, and must be carefully selected for optimal performance.

4. The gearbox is a complex mechanical device that allows for precise control of the speed and torque of the engine.

5. Teeth on the gears provide a secure and reliable means of transmitting power.

6. Helical gears offer a more efficient way of transmitting power, reducing friction and wear.

英文小作文：

Gear case is an essential component of any mechanical device that transmits power or motion. It plays a crucial role in maintaining the speed and torque of the system, ensuring smooth and efficient operation. From automobiles to industrial machinery, gear case is a vital component that cannot be ignored.

In addition to its mechanical function, gear case also plays a significant role in the design and aesthetics of the device. It provides a sleek and attractive appearance that enhances the overall functionality of the system. From its intricate designs to its precise manufacturing processes, gear case is a testament to the ingenuity and expertise of engineers and designers.

Gear case is not only essential for mechanical devices, but also for our daily lives. From household appliances to industrial equipment, gear case is everywhere, making our lives easier and more convenient. From simple to complex systems, gear case is a fundamental component that has revolutionized the way we live and work.