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liantze committed 52a9823

Use Cambria Math for XeLaTeX.

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 \RequirePackage{ifxetex}
 \ifxetex
 \RequirePackage{fontspec}
+\RequirePackage{unicode-math}
 \setmainfont{Times New Roman}
+\setmathfont{Cambria Math}
 \setsansfont{Arial}
 \else
 \RequirePackage[utf8]{inputenc}

english/chap-intro.tex

 \section{Where Does It Come From?}
 \label{sec:where}
 
+The pressure coefficient for an incompressible fluid is given by
+\begin{equation}
+C_p = \frac{P - P_\infty}{\frac{1}{2} \rho {U_\infty}^2}
+ = 1 - \left( \frac{U_1}{U_\infty} \right)^2,
+\end{equation}
+where $P$ is the local static pressure, $P_\infty$ is the static pressure at the beginning of the inlet section ($x = 0$ m) and $U_1$ and $U_\infty$ are the local and inlet free stream velocities, respectively. Figure 1(b) shows the $C_p$ distribution for the APG and FPG cases. The test section is configured such that a ZPG ($C_p = 0 \pm 0.01$) is maintained until $x \approx 3$ m, from which point a constant pressure gradient is maintained for both non-ZPG cases.
+
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