引用本文: | 陈艳霞, 刘利亭. 平面图形几何性质的实用计算方法[J]. 力学与实践, 2011, 33(4): 73-74. DOI: 10.6052/1000-0879-lxysj2010-443 |
Citation: | Liu Liting, . A calculation method for geometric propertries of plane figure[J]. MECHANICS IN ENGINEERING, 2011, 33(4): 73-74. DOI: 10.6052/1000-0879-lxysj2010-443 |