【建筑】梯级表面（Ｓ）

surfaces and internally

positioning of originals during the photomechanical production of patterned surfaces

air jet for air jet liquids on surfaces

patterned surfaces, textured pattern

dressing of the abrasive surfaces on grinding tools

preventing SLIPPING by conditioning of road surfaces

forming traffic SIGNS in or on road surfaces

balancing hinged surfaces for aircrafts