腐蚀

• Normally for bulk glass, etching increases the strength .
  对于块状玻璃，腐蚀通常都使强度提高。
• Bleeding from erosive gastritis was rarely life-threatening .
  腐蚀性胃炎的出血罕有危及生命的。
• Nitric acid bites copper .
  硝酸能腐蚀铜。
• The wires usually have a tendency toward crystallization and corrosion .
  挂线通常容易硬化和腐蚀。
• Much wearing and breaking of rocks takes place on the seashore .
  海边也有大量的岩石腐蚀破坏的情况。
• Acids eat into metal .
  酸能腐蚀金属。
• Each times are usually on the order of several minutes per batch .
  每批片子每次腐蚀时间通常为几分钟。
• If the fluorine content is high, it may increase plant corrosion .
  如果氟的含量高，会加剧设备的腐蚀。
• They appear to be very sensitive to mildly corrosive environments .
  它们似乎对轻度的腐蚀环境非常敏感。
• It may develop in place by the decay and disintegration of bedrock .
  它可能是通过基岩的腐蚀和崩解就地生成的。