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

讨论了二氯甲烷替代氯甲烷进行软质聚氨酯塑料的生产。

Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration method

塑料.非塑料的密度测定方法.第部分:浸渍法、液体比重瓶法和滴定法.

A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲在碱性条件下经加成、缩合制得可发性酚树脂，该树脂和表面活性剂、发剂、固化剂起发即得酚塑料。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要介绍了塑料保温、密封、防水的拱形彩钢屋面的特点、构造、材料、设备、施工工艺、生产成本和应。

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

讨论了用二氯甲烷替代一氟三氯甲烷进行软质聚氨酯泡沫塑料的生产。

Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration method

塑料.非泡沫塑料的密度测定方法.第一部分:浸渍法、重瓶法和滴定法.

A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲在碱性条件下经加成、缩合发性酚树脂，该树脂和表面活性剂、发泡剂、固化剂一起发泡即酚泡沫塑料。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要介绍了用泡沫塑料保温、密封、防水的拱形彩钢屋面的特点、构造、材料、设备、施工工艺、生产成本和应用。

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

讨论了用二氯甲烷替代一氟三氯甲烷进行软质聚氨酯泡沫生产。

Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration method

.非泡沫密度测定方法.第一部分:浸渍法、液体比重瓶法和滴定法.

A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲在碱条件下经加成、缩合制得可酚树脂，该树脂和表面活、泡、固化一起泡即得酚泡沫。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要介绍了用泡沫保温、密封、防水拱形彩钢屋面特点、构造、材、设备、施工工艺、生产成本和应用。

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

讨论了用二氯甲烷替代氟三氯甲烷进行软质聚氨酯泡沫的生。

Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration method

.非泡沫的密度测定方法.第部分:浸渍法、液体比重瓶法和滴定法.

A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲在碱性条件下经加成、缩合制得可发性酚树脂，该树脂和表面活性、发泡、固起发泡即得酚泡沫。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要介绍了用泡沫保温、密封、防水的拱形彩钢屋面的特点、构造、材、设备、施工工艺、生成本和应用。

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

讨论了用二氯甲烷替代一氟三氯甲烷进行软质聚氨酯泡沫塑料的生产。

Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration method

塑料.非泡沫塑料的密度测定方法.第一部分:浸渍法、液瓶法和滴定法.

A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲在碱性条件下经加成、缩可发性酚树脂，该树脂和表面活性剂、发泡剂、固化剂一起发泡即酚泡沫塑料。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要介绍了用泡沫塑料保温、密封、防水的拱形彩钢屋面的特点、构造、材料、设备、施工工艺、生产成本和应用。

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

讨论了用二氯甲烷替代氟三氯甲烷进行软质聚氨酯泡沫塑料的生产。

Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration method

塑料.非泡沫塑料的密度测定方法.分:浸渍法、液体比重瓶法和滴定法.

A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲在碱性条件下经加成、缩合制得可发性酚，和表面活性剂、发泡剂、固化剂起发泡即得酚泡沫塑料。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要介绍了用泡沫塑料保温、密封、防水的拱形彩钢屋面的特点、构造、材料、设备、施工工艺、生产成本和应用。

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

讨论了用二氯甲烷替代一氟三氯甲烷进行软质聚氨酯泡沫生产。

Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration method

.非泡沫密度测定方法.第一部分:浸渍法、液体比重瓶法和滴定法.

A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲在碱条件下经加成、缩合制得可酚树脂，该树脂和表面活、泡、固化一起泡即得酚泡沫。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要介绍了用泡沫保温、密封、防水拱形彩钢屋面特点、构造、材、设备、施工工艺、生产成本和应用。

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

讨论了用二氯甲烷替代一氟三氯甲烷进行软质聚氨酯泡沫塑料的生产。

Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration method

塑料.非泡沫塑料的密度测方法.第一部分:浸渍法、液体比重瓶法和滴法.

A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

酚与甲在碱性件经加成、缩合制得可发性酚树脂，该树脂和表面活性剂、发泡剂、固化剂一起发泡即得酚泡沫塑料。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要介绍了用泡沫塑料保温、密封、防水的拱形彩钢屋面的特点、构造、材料、设备、施工工艺、生产成本和应用。

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

讨论了用二氯甲烷替代一氟三氯甲烷进行软氨酯泡的生产。

Plastics -- Methods for determining the density of non-cellular plastics -- Part 1: Immersion method, liquid pyknometer method and titration method

.非泡的密度测定方法.第一部分:浸渍法、液体比重瓶法和滴定法.

A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲在碱性条件下经加成、缩合制得可发性酚树脂，该树脂和表面活性剂、发泡剂、固化剂一起发泡即得酚泡。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要介绍了用泡保温、密封、防水的拱形彩钢屋面的特点、构造、材、设备、施工工艺、生产成本和应用。