eliminary.html">
            
                <a href="../hardware/preliminary.html">
            
                    
                    2.2.1 初探
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.3.2.2" data-path="../hardware/circuit.html">
            
                <a href="../hardware/circuit.html">
            
                    
                    2.2.2 电路分析
            
                </a>
            

     