Ultimate disposal of waste electronic product has been a global environmental problem.

报废电子产品的最终处理已成为全球性的环境话题。

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Landfill is a primary method of ultimate disposition of municipal solid waste in many countries. The liner system of such disposal field is the key part of the whole system.

城市固体废弃物填埋场是许多国家最终处置固体废弃物的主要方法，其衬垫系统是填埋场整个系统中最关键的部位。

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