有人知道如何使用 Minion Pro 在数学模式下写粗体斜体希腊字母吗?bm 包似乎不起作用
\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage[left=1.00in, right=1.00in, top=1.00in, bottom=1.00in]{geometry}
\usepackage[onehalfspacing]{setspace}
\usepackage[english]{babel}
\usepackage[MnSymbol,quiet]{mathspec}
\setmathsfont(Digits,Latin,Greek)[Numbers={Lining,Proportional}]{Minion Pro}
\setmathrm{Minion Pro}
\usepackage{fontspec}
\setmainfont{Minion Pro}
\setsansfont[BoldFont={Helvetica Neue LT Std 65 Medium}]{Helvetica Neue LT Std}
\usepackage{sectsty}
\allsectionsfont{\sffamily}
\usepackage{bm}
\begin{document}
\begin{equation}
\bm{\beta}\beta
\boldsymbol{\beta}\beta
\end{equation}
\end{document}