该程序在TC环境下运行。 按键1-6可以画6中常用的不同极坐标曲线。 按按键 q 退出。 你可以添加你想知道或者尝试任何你想象的曲线。-The program runs under the environment in the TC. 1-6 keys can be painted in 6 different commonly used polar curves. Q according to exit button. You can add or you want to know