电子发射装置 meaning in English
electron producing device
Examples
- Special tool motivated by gas , liquid or pipeline conveyance medium to cleanup the pipeline , which can carryover the electronic launcher instrument and the ground tracking device
由气体、液体或管道输送介质推动，用以清理管道的专用工具。它可以携带电子发射装置与地面跟踪仪器。