重力勘查工作中基于大样法的松散沉积层密度测定方法的改进
耿涛, 冯凡, 杜辉, 冯治汉, 郭培虹

The improvement of density measurement method of loose sedimentary based on large sample method in gravity survey
GENG Tao, FENG Fan, DU Hui, FENG Zhi-Han, GUO Pei-Hong
图8 不规则四边形已知条件及待计算边长
Fig.8 The known conditions of irregular quadrilateral and the side length to be calculated