tread bar（胎面花纹块）是什么意思？音标发音+图解场景

胎面花纹块 /ˈtɹɛd ˈbɑː/ n

English: tread bar · 胎面花纹块

释义：Raised part of the tire tread that improves traction for various usage conditions.

这个词出现在以下图解场景（1）