补充 Mermaid 类图 语法.

Signed-off-by: chen.yang <chen.yang@yuzhen-iot.com>

Software/Applications/VSCode/VSCode_Markdown_UML.md

@@ -132,6 +132,71 @@ Class01 : int gorilla
 Class08 <--> C2: Cool label
 ```
 
+### 4.1.语法
+
+#### 4.1.1.泛化(Generalization)
+
+继承、子类与父类
+
+```mermaid
+classDiagram
+
+A<|--B
+A:+int doing
+A:+Can()
+B:+flying()
+```
+
+#### 4.1.2.实现(Realization)
+
+```mermaid
+classDiagram
+
+class IFlyable{
+  <<interface>>
+  + flying()
+}
+IFlyable<|..Bat
+Bat:+flying()
+```
+
+#### 4.1.3.组合(Composition)
+
+```mermaid
+classDiagram
+
+Computer *-- CPU
+  Computer *-- Mainboard
+  Computer *-- HardDisk
+  Computer *-- MemeryCard
+```
+
+#### 4.1.4.聚合(Aggregation)
+
+```mermaid
+classDiagram
+
+Company o-- Empolyee0
+Company o-- Empolyee1
+```
+
+#### 4.1.5.关联(Association)
+
+```mermaid
+classDiagram
+
+Reader "1..*" -- "1..*" Book
+Book "1..*"--> "1"Author
+```
+
+#### 4.1.6.依赖(Dependency)
+
+```mermaid
+classDiagram
+
+Animal..>Food
+```
+
 ## 5.Mermaid 横向流程图
 
 ```mermaid