diff --git a/dsRag/Txt/CHEMISTRY_1_1.txt b/dsRag/Txt/CHEMISTRY_1_1.txt
index 1348d8c9..20bf81bb 100644
--- a/dsRag/Txt/CHEMISTRY_1_1.txt
+++ b/dsRag/Txt/CHEMISTRY_1_1.txt
@@ -1,2 +1,2 @@
 氧化铁和硝酸的反应方程式
-FeO+4HNO_{ 3 }   \begin{array} {}   {\underline{ \quad Δ\quad  }}   \\ 或光照 \\  \end{array} Fe(NO_{ 3 }  )_{ 3 }  +2H_{ 2 }  O+NO_{ 2 }  ↑
\ No newline at end of file
+FeO+4HNO_{ 3 }   \begin{array} {}   {\underline{ \quad 加热\quad  }}   \\  \\  \end{array} Fe(NO_{ 3 }  )_{ 3 }  +2H_{ 2 }  O+NO_{ 2 }  ↑
\ No newline at end of file