expansion joint

expansion joint的音标为["ɪkspənˈseiʃn] [dʒɔɪnt]。

基本翻译为“伸缩接头”或“膨胀接头”。

速记技巧：可以通过联想记忆，将“expansion”与“en”联想到一起，表示“膨胀”。而“joint”可以联想到“关节”，表示连接处。因此，可以将整个单词理解为“膨胀的连接处”，即膨胀接头。同时，也可以通过多次重复强化记忆，来加深印象。

Expansion joint的英文词源可以追溯到拉丁语“expandere”和“jointus”，意为“扩展”和“连接”。它的主要功能是在管道、桥梁等结构中，允许两侧材料因温度变化而膨胀或收缩时，产生位移。

变化形式：复数形式为expansion joints，过去式为expanded the joint，现在分词为expanding the joint。

相关单词：

1. Contraction joint - 收缩缝 - 描述物体在受到压力或温度变化时，由于材料收缩而产生的缝隙。

2. Flexible expansion joint - 柔性膨胀节 - 一种用于管道系统中的设备，允许管道因温度变化而产生的膨胀或收缩。

3. Thermal expansion joint - 热膨胀接缝 - 用于建筑物或管道系统中的设备，允许两侧材料因温度变化而产生的位移。

4. Expansion gap - 膨胀间隙 - 描述物体因膨胀或收缩而产生的空间。

5. Joint flexibility - 连接柔性 - 描述连接的弹性性质，即连接能够适应一定程度的位移和变形。

Expansion joint在建筑、工程和机械工程中有着广泛的应用，它有助于保护结构和保持其稳定性，防止过度变形和损坏。

Expansion joint的常用短语：

1. expand joint by a certain amount

2. expand joint in a certain direction

3. expand joint at a certain angle

4. expand joint with a certain gap

5. expand joint with a certain material

6. expand joint with a certain structure

7. expand joint in a certain environment

例句：

1. The expansion joint allows the pipe to expand and contract without causing damage.

2. The expansion joint was installed at an angle of 45 degrees to ensure proper movement.

3. The gap between the expansion joint and the surrounding structure should be kept at a certain size to avoid excessive movement.

4. The expansion joint is made of high-quality material to ensure long-term durability.

5. The expansion joint should be installed in a safe and reliable environment to avoid any potential hazards.

英文小作文：

Title: Expansion Joints in Engineering Applications

Expansion joints are commonly used in engineering applications to allow for movement and expansion of various components, such as pipes, ducts, and bridges. These joints allow for flexibility in the system and prevent damage caused by excessive stress or strain.

In pipes, expansion joints allow for the expansion and contraction of the pipe due to changes in temperature or pressure. This ensures that the pipe does not experience permanent deformation or cracking, thereby maintaining its functionality and longevity.

In bridges, expansion joints allow for movement due to changes in temperature or wind loads, preventing structural damage and ensuring the safety of road users. These joints also allow for proper alignment of the bridge components, ensuring smooth traffic flow and reducing maintenance costs.

Expansion joints are critical components in ensuring the long-term reliability and durability of engineering systems. Their proper installation and maintenance are crucial to ensuring optimal performance and safety of these systems.