差出人
類似のロイヤリティフリーの画像
Man turning wheel to operate industrial machinery
Engineers or factory managers wearing safety helmet inspect the machines in the production line. Utility inspector check machine and test the system to meet the standard. machine, maintenance.
Engineer or factory worker using tablet computer and walkie talkie for finding how to use machine control panel in factory
Worker checking pipes in city heating plant.
続きを見る
