$ rpm -q netgen libnetgen
netgen-6.2.2406-alt2.x86_64
libnetgen-6.2.2406-alt2.x86_64

$ rpm -ql netgen libnetgen | grep -cE "locale|\.mo$|\.qm$"
0

$ rpm -ql netgen | grep desktop
/usr/share/applications/netgen.desktop

$ cat /usr/share/applications/netgen.desktop
[Desktop Entry]
Version=1.0
Name=Netgen
GenericName=Mesh Generator
Comment=3D finite element mesh generator
Exec=netgen
Icon=netgen
Type=Application
Terminal=false
Categories=Science;Engineering;
X-Desktop-File-Install-Version=0.26

$ grep -c "\[ru\]" /usr/share/applications/netgen.desktop
0

$ strings /usr/lib64/libnglib.so | grep -E "really want to quit|This is NETGEN"
tk_messageBox -message "This is NETGEN \nmainly written by \nJoachim Schoeberl \nthanks to \nRobert Gaisbauer, Johannes Gerstmayr, Philippose Rajan"
set ans [tk_messageBox -title "Quit Netgen?" -message "Do you really want to quit Netgen?" -type yesno -default "no" -icon question]