当前素材是由九二图网为您提供的“Defence functional background”作品，素材编号：20190221080757，尺寸为：5256×3366 像素，大小为：145.2MB，素材关键词要素为：Security locks, security defenses, shields, tablet computers, technical background, business materials, defense background, finance, work, science and technology finance, business, PSD stratification material,Business finance,Technology Finance,PhotoShop，欢迎下载收藏！