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tread bar /ˈtɹɛd ˈbɑː/ n

中文：胎面花纹块

中文 · 胎面花纹块Español · banda de rodamientoFrançais · sculpture
Meaning：Raised part of the tire tread that improves traction for various usage conditions.
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Found in these illustrated scenes（1）

Tractor front view

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