priming coat英 [ˈpraɪmɪŋ kəʊt]美 [ˈpraɪmɪŋ koʊt]底层(漆),底涂层,头道底漆化学英英释义nounthe first or preliminary coat of paint or size applied to a surfaceSynonym:flat coatgroundprimerprimingprimer coatundercoat