This article is a study of methylene chloride as a substitute for trichloro-fluoromethane in producing flexible polyurethane foam.
讨论了用二
替代一氟三进行软质聚氨酯泡沫塑料的生
。
This article is a study of methylene chloride as a substitute for trichloro-fluoromethane in producing flexible polyurethane foam.
讨论了用二替代一氟三进行软质聚氨酯泡沫塑料的生。
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