口径
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Meaning: caliber
How to Understand
口径
口径 refers to the diameter of a pipe, gun barrel, or other cylindrical object. It is commonly used in technical contexts to describe the internal or external size of a cylindrical structure.
The character 口 (kǒu) means 'mouth' or 'opening,' while 径 (jìng) means 'diameter' or 'path.' Together, they literally translate to 'opening diameter,' reflecting the measurement of an opening's width.
口径 is widely used in engineering, military, and manufacturing fields. For example, it describes the size of a bullet or the inner diameter of a pipe. In everyday language, it can also be used metaphorically to refer to the scope or scale of something, such as the "caliber" of a person's influence.
Example Sentences
这个水管的口径是5厘米。
The caliber of this water pipe is 5 centimeters.
子弹的口径决定了它的威力。
The caliber of the bullet determines its power.