countersink

countersink的音标为[ˈkaʊntərsʌŋk] ，基本翻译为“沉头螺丝孔，锥形凹孔”，速记技巧为“count 数，sink 沉，数到沉”。

Countersink这个词的英文词源可以追溯到古英语中的“counter”和“sink”，意为“向下凹进去”。它的变化形式包括复数形式“countersinks”和过去式、过去分词形式“counter-sunk”。

相关单词：

1. countersink螺栓（counter表示向下凹进去，sink表示螺栓，因此countersink意为螺栓孔向下凹进去的部分）；

2. countersinking（动词）指的是在金属板或木材中钻孔，以便于螺丝或钉子向下进入；

3. counter sink（名词）指的是螺丝孔的位置，通常比螺丝头稍大，以便于螺丝头向下进入；

4. counter sink bit（名词）指的是用于在金属板或木材中钻孔的工具；

5. countersunk（形容词）指的是与countersink相关的，如螺丝头被凹进去的部分。

以上这些单词都与countersink这个词有着密切的联系，它们都反映了该词的词义和用法。 countersink这个词在工业和建筑业中非常常见，它不仅用于固定物品，还用于装饰和美观。

常用短语：

1. countersink螺栓

2. countersink螺丝

3. countersink孔

4. countersink头

5. 凹槽式埋头孔

6. 埋头式凹槽孔

7. 埋头孔的凹槽

8. 凹槽孔的埋头

双语例句：

1. The bolt was countersunk into the hole.

2. The countersink head of the screw allowed for a tighter fit.

3. The countersink provided a secure and stable foundation for the new installation.

4. The countersunk holes in the wall provide a perfect fit for the pipes.

5. The countersink was used to create a recess for the screw head.

6. The countersink head of the screw allowed for easy removal after installation.

7. The countersunk screw provided a strong and reliable connection between the two parts.

英文小作文：

Title: The Importance of Countersinks in Construction

Countersinks are essential components in construction work, providing a secure and stable foundation for various types of installations. Whether it"s a wall, floor, or roof, countersinks play a crucial role in ensuring that the various components fit together perfectly and provide a long-lasting and reliable structure.

For instance, in plumbing work, countersinks create a perfect fit for pipes, preventing leaks and ensuring water flow. In electrical installations, countersinks provide a safe and stable foundation for cables and wires, preventing damage and ensuring proper function. Additionally, countersinks can also be used in woodworking to create recesses for screws, providing a more secure and stable connection between components.

However, it"s important to note that not all countersinks are created equal, and selecting the right type for the job is crucial. For example, some countersinks are designed specifically for use with screws, while others are designed for use with bolts or other types of fasteners. Additionally, it"s also important to ensure that the countersink is properly prepared and cleaned before installation, to prevent any potential issues or damage to the structure.

In conclusion, countersinks play a vital role in ensuring the stability and longevity of various types of installations in construction work. Understanding their importance and selecting the right type for the job is essential to achieving optimal results.