"injection bi-matière" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Locutioncomposée de injection et de bi-matière."
  ],
  "forms": [
    {
      "form": "injections bi-matière",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en français de l’industrie",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Moulage par co-injection"
      ],
      "id": "fr-injection_bi-matière-fr-noun-xQQDWaA-",
      "raw_tags": [
        "Industrie",
        "Polymères"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɛ̃.ʒɛk.sjɔ̃ bi.ma.tjɛʁ\\"
    }
  ],
  "synonyms": [
    {
      "word": "co-injection"
    }
  ],
  "tags": [
    "feminine"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "co-injection molding"
    },
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "co-injection moulding"
    }
  ],
  "word": "injection bi-matière"
}

{
  "categories": [
    "Compositions en français",
    "Locutions nominales en français",
    "Traductions en anglais",
    "français"
  ],
  "etymology_texts": [
    "Locutioncomposée de injection et de bi-matière."
  ],
  "forms": [
    {
      "form": "injections bi-matière",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Lexique en français de l’industrie"
      ],
      "glosses": [
        "Moulage par co-injection"
      ],
      "raw_tags": [
        "Industrie",
        "Polymères"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɛ̃.ʒɛk.sjɔ̃ bi.ma.tjɛʁ\\"
    }
  ],
  "synonyms": [
    {
      "word": "co-injection"
    }
  ],
  "tags": [
    "feminine"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "co-injection molding"
    },
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "co-injection moulding"
    }
  ],
  "word": "injection bi-matière"
}