diff --git a/src/Add-on/ArcBoard/ArcBoardBuild.ts b/src/Add-on/ArcBoard/ArcBoardBuild.ts
index 13135cb9b..422b5d9e4 100644
--- a/src/Add-on/ArcBoard/ArcBoardBuild.ts
+++ b/src/Add-on/ArcBoard/ArcBoardBuild.ts
@@ -374,7 +374,7 @@ export class ArcBoardBuild
         }
 
         let remPolys: Poly3[] = toPolygons(csg);
-        let plane = [1, 0, 0, 0];
+        let plane: [number, number, number, number] = [1, 0, 0, 0];
         let splitedPolys: Poly3[] = [];
         for (let x of split_xs)
         {
diff --git a/src/DatabaseServices/Entity/EntityFbx.ts b/src/DatabaseServices/Entity/EntityFbx.ts
index 73b61a9b9..da2b336ba 100644
--- a/src/DatabaseServices/Entity/EntityFbx.ts
+++ b/src/DatabaseServices/Entity/EntityFbx.ts
@@ -115,8 +115,9 @@ export class EntityFbx extends Entity
     newObject: Group;
 
     //通过二进制数组生成fbx模型
-    LoadFBXModelFromArrayBuffer(fbxArray: ArrayBuffer)
+    LoadFBXModelFromArrayBuffer(fbxArray: ArrayBuffer): string | undefined
     {
+        //del_exp_start
         let obj: Group;
         try
         {
@@ -129,10 +130,12 @@ export class EntityFbx extends Entity
 
         this.newObject = obj;
         this.Update();
+        //del_exp_end
     }
 
     CloneDrawObject(from: this)
     {
+        //del_exp_start
         for (let [type, obj] of from._CacheDrawObject)
         {
             let oldUserDaata = obj.userData;
@@ -155,6 +158,7 @@ export class EntityFbx extends Entity
             this._CacheDrawObject.set(type, newObj);
         }
         this.NeedUpdateFlag = UpdateDraw.None;
+        //del_exp_end
     }
     ApplyScaleMatrix(m: Matrix4)
     {
@@ -185,6 +189,7 @@ export class EntityFbx extends Entity
         return this;
     }
 
+    //del_exp_start
     InitDrawObject(renderType: RenderType = RenderType.Wireframe)
     {
         if (renderType > 100) return;//避免CTRL+P 无法打印(首次开图,同时选墙和窗)
@@ -439,6 +444,8 @@ export class EntityFbx extends Entity
         return [];
     }
 
+    //del_exp_end
+
     MoveGripPoints(indexList: Array<number>, vec: Vector3)
     {
         if (indexList.length)