"mill scale" meaning in 英語

{
  "categories": [
    {
      "kind": "other",
      "name": "有1個詞條的頁面",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語不可數名詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語名詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語詞元",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "有引文的英語詞",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "英語引文翻譯請求",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1951 October, “Preventing Rail Corrosion”, 出自 Railway Magazine，頁號 648:",
          "text": "Recently the Great Northern Railway, U,S.A., which has a considerable mileage of line bordering the Pacific seaboard, has put in service mobile equipment for applying anti-corrosion treatment to rails. An old motor-car has been adapted to carry two oxy-acetylene flame-cleaning heads, which simultaneously clean both sides of both rails of all mill-scale and rust as the car is hand-propelled forward; men follow to brush away the loosened material; the final operation is that of spraying both rails, by means of paint guns carried on a trolley, with a corrosion-resisting compound."
        }
      ],
      "glosses": [
        "氧化皮"
      ],
      "id": "zh-mill_scale-en-noun-lg8gRBZH"
    }
  ],
  "tags": [
    "uncountable"
  ],
  "word": "mill scale"
}

{
  "categories": [
    "有1個詞條的頁面",
    "英語不可數名詞",
    "英語名詞",
    "英語詞元"
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "有引文的英語詞",
        "英語引文翻譯請求"
      ],
      "examples": [
        {
          "ref": "1951 October, “Preventing Rail Corrosion”, 出自 Railway Magazine，頁號 648:",
          "text": "Recently the Great Northern Railway, U,S.A., which has a considerable mileage of line bordering the Pacific seaboard, has put in service mobile equipment for applying anti-corrosion treatment to rails. An old motor-car has been adapted to carry two oxy-acetylene flame-cleaning heads, which simultaneously clean both sides of both rails of all mill-scale and rust as the car is hand-propelled forward; men follow to brush away the loosened material; the final operation is that of spraying both rails, by means of paint guns carried on a trolley, with a corrosion-resisting compound."
        }
      ],
      "glosses": [
        "氧化皮"
      ]
    }
  ],
  "tags": [
    "uncountable"
  ],
  "word": "mill scale"
}