基于椭圆画法原理在三心拱巷道施工中放样的可行性研究
周华龙,姬安召,雷武林
The Feasibility Study of Fast Lofting by Principle of Drawing Ellipse at Three Heart Arch Roadway Construction
煤炭工程 . 2015, (4): 50 -53 .  DOI: 10.11799/ce201504017