Definition
螺纹 refers to any spiral-shaped ridge or groove. It is most commonly used for the threads on screws and bolts (机械螺纹), and is also a technical term for one type of fingerprint pattern (fingerprint whorl). The core concept is consistent across both fields—a continuous helical ridge—so the same word covers two areas that English splits into 'screw thread' and 'fingerprint whorl'.
n.
screw thread (helical ridge on a screw, bolt, or pipe)fingerprint whorl (spiral pattern in a fingerprint)
Examples
- 螺纹。Zhège luósī de luó wén fēicháng biāozhǔn.The threads on this screw are very standard.
- 螺纹。Tā de zhǐwén shǔyú luó wén xíng.His fingerprint is of the whorl type.
- 螺纹。Wǒmen xūyào jiǎnchá zhège língjiàn shàng de luó wén shìfǒu wánzhěng.We need to check whether the threads on this part are intact.
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