A modern variation on the lunch counter is the fast food operation.
在午餐柜台一个现代的变化就是快餐食品的经营。
Detection of components: use of G-M counter tube, high sensitivity, fast response, stable and reliable.
探测元件：采用G - M计数管，灵敏度高、响应快、工作稳定可靠。
Detection of components: use of G-M counter tube, high sensitivity, fast response, stable and reliable.
探测元件：采用G - M计数管，灵敏度高、响应快、工作稳定可靠。
应用推荐