当前素材是由九二图网为您提供的“Gear photography”作品，素材编号：20160609065301，尺寸为：3900×2600 像素，大小为：2.3MB，素材关键词要素为：Gears, machines, machines, precision machines, mechanical industries, wheels, photography, mechanical devices, metals, systems, industry, gear chains, stereo gears, machines, swings, technology, high technology, industrial production, modern technology, p,Other Technologies,Modern Technology,Stock Images，欢迎下载收藏！