"mean distance between failure" meaning in English

{
  "forms": [
    {
      "form": "mean distance between failure abbreviated as MDBF",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "mean distances between failure",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mean distances between failure"
      },
      "expansion": "mean distance between failure (plural mean distances between failure)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Road transport",
          "orig": "en:Road transport",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A measure of reliability that expresses the average distance travelled by a type of lorry, bus, rolling stock, etc, before preventative or reparative maintenance is required."
      ],
      "id": "en-mean_distance_between_failure-en-noun-ZnYk7cXE",
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "lorry",
          "lorry"
        ],
        [
          "bus",
          "bus"
        ],
        [
          "rolling stock",
          "rolling stock"
        ],
        [
          "preventative",
          "preventative"
        ],
        [
          "reparative",
          "reparative"
        ]
      ],
      "raw_glosses": [
        "(rail transport, road transport) A measure of reliability that expresses the average distance travelled by a type of lorry, bus, rolling stock, etc, before preventative or reparative maintenance is required."
      ],
      "related": [
        {
          "word": "mean time between failure"
        },
        {
          "word": "failure rate"
        }
      ],
      "topics": [
        "rail-transport",
        "railways",
        "road",
        "transport"
      ]
    }
  ],
  "word": "mean distance between failure"
}

{
  "forms": [
    {
      "form": "mean distance between failure abbreviated as MDBF",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "mean distances between failure",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mean distances between failure"
      },
      "expansion": "mean distance between failure (plural mean distances between failure)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "mean time between failure"
    },
    {
      "word": "failure rate"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Rail transportation",
        "en:Road transport"
      ],
      "glosses": [
        "A measure of reliability that expresses the average distance travelled by a type of lorry, bus, rolling stock, etc, before preventative or reparative maintenance is required."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "lorry",
          "lorry"
        ],
        [
          "bus",
          "bus"
        ],
        [
          "rolling stock",
          "rolling stock"
        ],
        [
          "preventative",
          "preventative"
        ],
        [
          "reparative",
          "reparative"
        ]
      ],
      "raw_glosses": [
        "(rail transport, road transport) A measure of reliability that expresses the average distance travelled by a type of lorry, bus, rolling stock, etc, before preventative or reparative maintenance is required."
      ],
      "topics": [
        "rail-transport",
        "railways",
        "road",
        "transport"
      ]
    }
  ],
  "word": "mean distance between failure"
}