搜元素提供国外优质的免版权矢量素材资源免费下载，该资源的中文名称是：African American Engineer worker plc controller machine system box maintenance technicians engineering service appliances for Oil and Gas pumping station gas industry isometric vecto，英文名称是：African American Engineer worker plc controller machine system box maintenance technicians engineering service appliances for Oil and Gas pumping station gas industry isometric vecto，该资源由网友上传，提供高速下载。
