annuli

annuli的音标为[ə"njuːlɪ]，基本翻译为“环，环状物；环状物所围绕的区域”。

速记技巧：可以将单词拆分记忆，如“annu（年）+ li（里）”即可。

Annuli这个词来源于拉丁语，意为“环”。它的变化形式主要有复数形式annuli，过去式形式annul和现在分词形式annulating。

相关单词：

1. annul - 意为“取消，废除”，例如“annul a contract”（取消合同）。

2. annulment - 意为“废除，取消”，例如“the annulment of a law”（法律的废除）。

3. annulus - 意为“环，圆环”，例如“an annulus of Saturn”（土星的环）。

4. annulled - 形容词形式，意为“被取消的，无效的”。

5. annulli - 复数形式，在某些特定上下文中使用。

6. annulment-ing - 分词形式，表示进行时的状态。

7. annul-lize - 合成词，表示“取消或废除”。

8. annul-lify - 合成词，表示“使无效”。

9. annul-luminous - 合成词，表示“环形的，发光的”。

10. annul-luminously - 合成词，表示“环状地，发光地”。

以上这些单词都与annuli这个词源有关，通过不同的组合和变形，可以创造出许多与环状、取消、废除等相关的词汇。

常用短语：

1. annulus diameter

2. annulus flow

3. inner annulus

4. outer annulus

5. annulus pressure

6. annulus volume

7. annulus pressure drop

双语例句：

1. The annulus between the two pipes is sealed off with a gasket.（两个管道之间的环形空间用垫片密封。）

2. The annulus flow rate is controlled by adjusting the pump speed.（通过调节泵的速度来控制环形流速。）

3. The outer annulus of the cylinder is filled with cooling water during operation.（在运行过程中，气缸的外环形区域被填充冷却水。）

4. The inner annulus of the pipe is used for conveying materials.（管道的内环形区域用于输送物料。）

5. The annulus pressure drop is a measure of the efficiency of a pump.（环形压力降是泵效率的一个指标。）

6. The annulus volume determines how much material can be conveyed through a pipe.（环形体积决定了物料可以通过管道输送的量。）

7. The annulus is a space between two concentric circles or rings.（环形空间是两个同心圆或环状物之间的空间。）

英文小作文：

Annuli are commonly found in engineering systems, such as pipelines and pumps. They play an important role in controlling flow rates, pressures, and volumes, and can significantly affect system efficiency and performance. In a pipeline system, the inner annulus is used for conveying materials, while the outer annulus acts as a buffer zone to prevent excessive pressure fluctuations. By carefully managing the annuli in various components of a system, engineers can ensure optimal performance and minimize potential issues. Understanding the role of annuli in various systems is crucial for effective troubleshooting and maintenance.