\begin{tabular}{m{4.5cm}||m{0.5cm}|m{0.5cm}|m{0.5cm}|m{0.5cm}|m{0.5cm}|m{0.5cm}}
\hline
     & $K_{\sigma_{11}}$ 
     & $K_{\sigma_{22}}$ 
     & $K_{\sigma_{33}}$ 
     & $K_{\sigma_{12}}$ 
     & $K_{\sigma_{13}}$ 
     & $K_{\sigma_{23}}$ \\
\hline
\hline  
  Разрыв волокна основы & 
  $\frac{3.84}{3.59}$ & 
  $\frac{10.08}{4.50}$ & 
  $\bf\frac{6.56}{6.32}$ &
  $\frac{4.31}{3.98}$ & 
  $\bf\frac{14.00}{11.21}$ &
  $\frac{6.22}{7.12}$ \\
\hline
  Разрыв волокон основы и утка & 
  $\frac{3.82}{3.42}$ & 
  $\frac{9.27}{4.22}$ & 
  $\frac{6.96}{6.37}$ & 
  $\frac{4.50}{3.87}$ & 
  $\bf\frac{16.02}{11.47}$ & 
  $\bf\frac{16.89}{6.89}$ \\
\hline
\end{tabular}