底层涂料 meaning in English

ground coat
prime paint
primer
priming paint
under coating paint

1 cashew resin undercoats erratum 1
?如树脂底层涂料
Anti - chipping primer
抗破裂底漆底层涂料
Standard specification for asphalt primer used in roofing , dampproofing , and waterproofing
屋面防潮和防水用沥青底层涂料的标准规范
Aerospace - adhesive films and primers for structural assemblies - technical specification
航空航天.结构组件的粘接膜和底层涂料.技术规范
Coatings for radiators - part 1 : terms , requirements and tests for primers and industrially applied priming coats
散热器的涂层.第1部分:底层涂料和工业用底漆的术语