This paper gives the design of electronic phased focused system adopted direct digital synthesis.
2
介绍新型WXJ25型微电子相敏轨道电路接收器的工作原理，技术条件及维修标准。
The working principle, technical specification and maintenance standard of the new WXJ25 phase-sensitive track circuit receiver were introduced in this paper.
3
而这个过程是离子化，气相组分失去一个电子。
This is called ionization, gas phase species loses an electron.
点击反馈