portrait of smiling redhead engineer standing with hands in pockets against shelf at workshop - 發明家 個照片及圖片檔
asian senior male architect working on ecological construction project in office with blueprints, engineer inspection, wind turbines models on engineers table. - 發明家 個照片及圖片檔
portrait of smiling young female engineer with smart phone sitting at table in workshop - 發明家 個照片及圖片檔