diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 4fa2516..9c5f552 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -1995,6 +1995,7 @@
 				- ## Topic 11: ==System Level Design==
 				  deck:: 2023t1/product/t11
 					- 系统级设计（System-level Design）产品架构可以描述为 :Product Architecture can be described as: #flashcard
+					  id:: 648afdb9-baec-4117-9da9-5c12dcb2dd38
 						- 1."the **scheme** by which the functional elements of the product are arranged into physical chunks and by which the chunks interact”
 						- 2.**Functional** – individual operations and transformations that contribute to its overall performance
 						- 3.**Physical** – parts, components and subassemblies that implement the product’s functions
@@ -2004,14 +2005,17 @@
 					  id:: 648adeaf-b4ef-4ae0-aac3-74b22ee2c63a
 						- ◦ 模块化架构 modular architecture 特点： #flashcard
 						  extra:: 理解：当每个功能都只被一个组件完成时，并且组件之间的配合十分完美时，这种架构允许在不改变的情况下只改变一组而不影响整体功能。也就是说各个组件可以单独设计
+						  id:: 648afdb9-ff7c-4958-8c43-61f5f2e9c502
 							- 1.各个组件分别实现一个或多个功能Each chunk implements one or a few functions entirely. ·
 							- 2.组件之间的关系是明确的，这种关系往往是实现一个产品功能的基础 ·The interactions between chunks are well defined. ·Modular architecture has simplicity and reusability for a product family or platform.
 						- ▪ 槽形模块架构 Slot-modular (the most common type) #flashcard 
 						  extra:: 例子：汽车上的收音机接口与速度仪、仪表盘的接口都不同
+						  id:: 648afdb9-30e4-4982-bcf6-511478cabfdc
 							- 每个接口都与于其它接口类型不同， Each of the interfaces between chunks in a slot-modular architecture is of a different type from the others –
 							- 产品中的组件不能互换 therefore the various chunks in the product cannot be interchanged
 						- ▪ 总线模型 Bus-modular #flashcard 
 						  extra:: 例子：轨道照明
+						  id:: 648afdb9-d501-4bcb-a79e-8a859f57c162
 							- 有一个通用总线，其他组件通过同类型的接口连接到这个总线上 There is a common bus to which the other chunks connect via the same type of interface
 						- ▪ 组合型模块架构 Sectional-modular
 						  extra::  例子：分体沙发
@@ -2028,8 +2032,9 @@
 							- consumption
 							- , flexibility in use,
 							- reuse
-					- ▪Product **variety** l Variety refers to :-> the range of product models the firm can produce within a particular time period in response to market demand l Products built around modular product architectures can be more easily varied without adding tremendous complexity to the manufacturing system
+					- ▪Product **variety** l Variety refers to :-> the range of product models the firm can produce within a particular time period in response to market demand 
 					  id:: 648adea3-42a7-4192-8e0e-9bd19e753f1d
+						- Products built around modular product architectures can be more easily varied without adding tremendous complexity to the manufacturing system
 					- ◦ 集成化架构 Integral architecture 特点： #flashcard
 					  id:: 648adeaf-dd91-4bd0-99fc-9e1ff3d553e3
 						- 1.产品的每个功能由多个组件组成