错误消息:“\mathrm 仅在数学模式下允许”,但数学模式已打开,并且 $
当我使用此代码时: \documentclass{scrbook} \begin{document} The thermodynamics of the phase inversion process at constant temperature $T$ is described by the free enthalpy of mixing $\Delta G\textsubscript{\mathrm m}$, which is given by ... \end{document} 我收到这个错误...