{
    "language": "zh_cn",
    "textures": {
        "back_ground_space": "back_ground_space.png",
        "planet": {
            "earth_ground": "earth_ground.png"
        },
        "flame": {
            "liquid": "liquid_engine_flame.png",
            "soild": "soild_engine_flame.png",
            "ion": "ion_engine_flame.png"
        }
    },
    "basic_number": {
        "G" : [6.67, -11, ["N", "m", "m"], ["kg", "kg"]]
    }
}