add level

linkchain-lc · Aug 14, 2018 · bfece02 · bfece02
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diff --git a/DAG/researchDAG.md b/DAG/researchDAG.md
@@ -85,6 +85,9 @@ DAG的激励机制可以通过账户选择多个代表时，需要支付代表
 
 <font color=#ff0000>待讨论</font>
 ## 分层设计
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+![](https://github.com/linkchain-lc/basecoin/blob/master/DAG/source/researchDAG/pic7.png?raw=true)
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 <font color=#ff0000>待讨论</font>
 ## 攻击防御
 ### 1. ddos攻击

diff --git a/DAG/source/researchDAG/pic7.png b/DAG/source/researchDAG/pic7.png