//曲柄滑块机构测试
{
    "msg": "曲柄滑块机构运动学测试",
    "req_code": "DEBUG_001",
    "req_from": "debugger",
    "req_cmd": "Cmd_FourBar_CrankSlider",
    "req_param": {
        "L_AB": 0.5,
        "L_BS": 2.0,
        "S_OFS": 0.0,
        "angleDeg": 45.0
    }
}