{
  "schema_version": 1,
  "experiment": "course-02/sound-speed",
  "references": [
    {
      "id": "li2018-acoustic-multipath",
      "title": "声波多次往返叠加对相位比较法测量声速的影响",
      "authors": [
        "李轩",
        "方锦江",
        "单桂晔",
        "高志华"
      ],
      "journal": "物理实验",
      "year": 2018,
      "volume": 38,
      "issue": 4,
      "pages": "47–51",
      "doi": "10.19655/j.cnki.1005-4642.2018.04.011",
      "url": "https://doi.org/10.19655/j.cnki.1005-4642.2018.04.011",
      "full_text_status": "obtained_and_read",
      "pdf_sha256": "12739b0cfbad4fcba99feafb399ac101d5dd62263ad8c01a50c945a61b886c45",
      "locators": [
        {
          "page": 47,
          "location": "引言",
          "supports": "驻波腹λ/2与相位重复λ"
        },
        {
          "page": 48,
          "location": "式1–5",
          "supports": "多次往返、声压/位移和XY通道"
        },
        {
          "pages": [
            49,
            50
          ],
          "location": "§2.2–2.4",
          "supports": "近距离多解与反射/衰减边界"
        }
      ],
      "parameter_mapping": "q is effective round-trip amplitude retention, independent teaching value; not single-face beta",
      "implementation_scope": "infinite geometric port sum with constant q; ideal single-pass phase mode; not finite-N distance-dependent attenuation reconstruction"
    }
  ]
}