\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 & 
  $\frac{1.39}{1.30}$ & 
  $\frac{1.86}{3.14}$ & 
  $\bf\frac{2.72}{5.41}$ &
  $\frac{1.31}{0.99}$ & 
  $\frac{1.13}{0.88}$ & 
  $\frac{1.32}{1.87}$ \\
\hline
  Разрыв волокон основы и утка & 
  $\frac{1.42}{1.24}$ & 
  $\bf\frac{2.00}{4.68}$ & 
  $\frac{1.05}{1.39}$ & 
  $\frac{1.41}{1.07}$ & 
  $\frac{1.05}{0.96}$ & 
  $\frac{1.76}{2.08}$ \\
\hline
\end{tabular}