"reduction drive" meaning in English

{
  "forms": [
    {
      "form": "reduction drives",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "reduction drive (plural reduction drives)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
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          "langcode": "en",
          "name": "Mechanical engineering",
          "orig": "en:Mechanical engineering",
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            "Applied sciences",
            "Technology",
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          "source": "w"
        }
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      "examples": [
        {
          "ref": "1962 December, “Talking of Trains: French track-layers for W.R.”, in Modern Railways, page 369:",
          "text": "[...] there are also a direct drive to a hydraulic gear pump, and a reduction drive to two pumps in tandem; [...].",
          "type": "quote"
        }
      ],
      "glosses": [
        "A device which reduces the input rotational speed to a lower output speed, and can also increase torque."
      ],
      "id": "en-reduction_drive-en-noun-TSsvePzt",
      "links": [
        [
          "mechanical engineering",
          "mechanical engineering"
        ],
        [
          "torque",
          "torque"
        ]
      ],
      "raw_glosses": [
        "(mechanical engineering) A device which reduces the input rotational speed to a lower output speed, and can also increase torque."
      ],
      "topics": [
        "engineering",
        "mechanical",
        "mechanical-engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "reduction drive"
}

{
  "forms": [
    {
      "form": "reduction drives",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "reduction drive (plural reduction drives)",
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  "lang_code": "en",
  "pos": "noun",
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        "English multiword terms",
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      "examples": [
        {
          "ref": "1962 December, “Talking of Trains: French track-layers for W.R.”, in Modern Railways, page 369:",
          "text": "[...] there are also a direct drive to a hydraulic gear pump, and a reduction drive to two pumps in tandem; [...].",
          "type": "quote"
        }
      ],
      "glosses": [
        "A device which reduces the input rotational speed to a lower output speed, and can also increase torque."
      ],
      "links": [
        [
          "mechanical engineering",
          "mechanical engineering"
        ],
        [
          "torque",
          "torque"
        ]
      ],
      "raw_glosses": [
        "(mechanical engineering) A device which reduces the input rotational speed to a lower output speed, and can also increase torque."
      ],
      "topics": [
        "engineering",
        "mechanical",
        "mechanical-engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "reduction drive"
}