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open-tank method

A method of treating mine timber to prevent decay in which the timber is immersed in a tank of hot preservative and then in a tank of cold preservative. The preservatives used are creosote, zinc chloride, sodium fluoride, and other chemicals.

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创建者

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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