[
    {
        "type": "text",
        "text": "氢气与氧气反应化学方程式",
        "text_level": 1,
        "page_idx": 0
    },
    {
        "type": "equation",
        "img_path": "images/7cb77f136ebe2c781354e5f9e7a029229383b816e6e0266d7d79a8aab71cfc21.jpg",
        "text": "$$\n2 H _ { 2 } + O _ { 2 } = 2 H _ { 2 } O\n$$",
        "text_format": "latex",
        "page_idx": 0
    }
]