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This article is a study of methylene chloride as a substitute for trichloro-fluoromethane in producing flexible polyurethane foam.

讨论了用二一氟三聚氨酯泡沫塑料的生产

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Dardanian, Dardanus, Dardic, dare, dared, daredevil, daredevilry, daredeviltry, dareful, Darelle,

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3G, 401(K), a,

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Unfortunately, the polyurethane foam he used is inherently unstable.

不幸的是,他使用的聚氨酯泡沫天生不

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China Daily

Polyurethane foam sealant was used during construction at the first floor underground, releasing flammable gases that accumulated to reach combustible conditions.

地下一层施工作业中使用聚氨酯泡沫填缝剂时,释放易燃气体局部积聚达到可燃条件。

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daring, daringly, dariole, Darius, Darjeeling, dark, dark adaptation, Dark Ages, dark blue, dark brown,

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3G, 401(K), a,
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