相似文献/References:
[1]孙伯鲁.空间角度自动计算的方案设计[J].郑州大学学报(工学版),1990,11(01):69.
Sun Bolu,The design of the automatic calculation of the space angle[J].Journal of Zhengzhou University (Engineering Science),1990,11(01):69.
[2]李杰.区域性防灾系统研究的总体思路[J].郑州大学学报(工学版),1990,11(03):75.
Li Jie,The overall idea of regional disaster prevention system research[J].Journal of Zhengzhou University (Engineering Science),1990,11(01):75.