相似文献/References:
[1]赵瑾.可编程控制器(PLC)在起重机控制系统改造中的应用[J].南京师范大学学报(工程技术版),2001,01(04):066.
Zhao Jin.Application of Programmable Controller (PLC) in Retrofit of the Crane Control System[J].Journal of Nanjing Normal University(Engineering and Technology),2001,01(01):066.