高手请进

阳光明媚

模拟边坡锚杆时：
struct node 206 83.2917,84.709366
struct node 207 92.50693,87.15538 slave x y 99
struct node 208 79.47258,87.298164
struct node 209 89.09946,89.427025 slave x y 86
struct node 210 75.70472,89.758804
struct node 211 85.69698,91.69534 slave x y 73
struct cable begin node 206 end node 207 seg 10 prop 2001
struct cable begin node 208 end node 209 seg 10 prop 2001
struct cable begin node 210 end node 211 seg 10 prop 2001

其中slavr x y 99是什么意思？