diff --git a/sources/tech/20161213 9 Open SourceCommercial Software for Data Center Infrastructure Management.md b/sources/tech/20161213 9 Open SourceCommercial Software for Data Center Infrastructure Management.md
index 56929b83e8..fb385a925f 100644
--- a/sources/tech/20161213 9 Open SourceCommercial Software for Data Center Infrastructure Management.md	
+++ b/sources/tech/20161213 9 Open SourceCommercial Software for Data Center Infrastructure Management.md	
@@ -1,3 +1,5 @@
+translating by beyondworld
+
 9 Open Source/Commercial Software for Data Center Infrastructure Management
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