After production, the steel had been coated with a reddish paint primer it maintained throughout construction.
在生产完成后，钢被涂上了一层红色的底漆，它在整个施工过程中一直保持着这种状态。
Paint primer
原声例句
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中文百科
底漆 Primer (paint)
（重定向自Paint primer）
![底漆](/Images/godic/202502/01/White_primer_bucket1615.jpg")
![锌黄（铬酸锌）底漆，香港俗称「铅水油」](/Images/godic/202502/01/Zinc_chromate_primer1615.jpg")
底漆又称底油，是在髹漆之前预先涂在物料的东西。底漆令油漆能黏附在物料表面、令油漆更耐用、以及为髹漆的物料加上额外保护。
英语百科
Primer (paint) 底漆
（重定向自Paint primer）
![Primer as a step in the coating process of a car body.](/Images/godic/202502/01/Autolack_4_Grundierung_IMG_24091615.JPG")
![Zinc chromate primer](/Images/godic/202502/01/Zinc_chromate_primer1616.jpg")
A primer (/ˈpraɪmər/) or undercoat is a preparatory coating put on materials before painting. Priming ensures better adhesion of paint to the surface, increases paint durability, and provides additional protection for the material being painted.
- photo chromic micro image
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