当前素材是由九二图网为您提供的“Mechanical gear chain for precision workers”作品，素材编号：20160609073621，尺寸为：5000×3750 像素，大小为：4.1MB，素材关键词要素为：Stereo gears, machines, gears, machines, machines, precision machines, mechanical industries, wheels, photography, mechanical devices, metals, systems, industry, gear chains, rotations, technology, high technology, industrial production, modern technology,Other Technologies,Modern Technology,Stock Images，欢迎下载收藏！