deletions | additions       diff --git a/layout.md b/layout.md  index 5f24d07..b0fc187 100644  --- a/layout.md  +++ b/layout.md 
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figures/penghuMing-001/penghuMing-001.png  figures/penghuMing-002/penghuMing-002.png  subsection_Physical_Properties_of_the__.tex  figures/timeline.material/timeline.material.png  figures/penghuMing-018/penghuMing-018.png  figures/penghuMing-019/penghuMing-019.png  subsubsection_The_shape_of_a__.tex