fix some problems

1st_encode/example_new.json

@@ -78,7 +78,7 @@
               },
               "x-axis": 40,
               "y-axis": 50,
-              "angle": 6000
+              "angle": 60
             }
           },
           {
@@ -119,7 +119,7 @@
       "data": {
         "x-axis": 30,
         "y-axis": 40,
-        "angle": 6000
+        "angle": 60
       }
     },
     {
@@ -158,7 +158,7 @@
             "type": "iteration",
             "data": {
               "times": 5,
-              "operation": [
+              "operations": [
                 [
                   {
                     "type": "move",
@@ -174,7 +174,7 @@
                         "dx": 0,
                         "dy": 0
                       },
-                      "dθ": 6000
+                      "dθ": 60
                     }
                   },
                   {
@@ -202,7 +202,7 @@
                         "dx": 0,
                         "dy": 0
                       },
-                      "dθ": 6000
+                      "dθ": 60
                     }
                   },
                   {