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US3551364A Processes for making microporous polyurethane bodies employing non-boiling liquid alkyl ethers or liquid aliphatic hydrocarbons 失效
制造使用非沸腾液态烷烃或液体二硫化碳的微波聚氨酯体的方法

Processes for making microporous polyurethane bodies employing non-boiling liquid alkyl ethers or liquid aliphatic hydrocarbons
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