区分站点状态的两级轮询控制系统
杨志军, 孙洋洋
Two-level polling control system for distinguishing site status
YANG Zhijun, SUN Yangyang
计算机应用 . 2019, (5): 1416 -1420 .  DOI: 10.11772/j.issn.1001-9081.2018051122