"постоянство" meaning in 俄语

{
  "categories": [
    {
      "kind": "other",
      "name": "俄语",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "俄语名词",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "俄语",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "恒定\n不变\n守恒\n常数\n〔中〕坚定不移，始终不渝；永恒性，恒定；常性\n#::～ в дру́жбе友谊的永恒性\n#::зако́н ～а вещества́物质守恒律."
      ],
      "id": "zh-постоянство-ru-noun-jsHZUP4i"
    }
  ],
  "word": "постоянство"
}

{
  "categories": [
    "俄语",
    "俄语名词"
  ],
  "lang": "俄语",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "恒定\n不变\n守恒\n常数\n〔中〕坚定不移，始终不渝；永恒性，恒定；常性\n#::～ в дру́жбе友谊的永恒性\n#::зако́н ～а вещества́物质守恒律."
      ]
    }
  ],
  "word": "постоянство"
}