【机】 asphalt prime coat; asphalt primer
bitumen; pitch
【化】 asphalt; bitumen; nigrite; pitch
【医】 asphalt; bitumen; Jew's pitch; mineral pitch; peucine; pitch; pix
primer; priming; priming paint
【化】 base coat; ground coat; ground coat paint; precoat; prime coat; primer
primer coat; priming paint; undercoat