Whether to need in the existing technology premise too much progress polystyrene foamed plastic and polyurethane hard foam flame retardancy index?

是否需要在现有的技术前提下过多地进步聚苯乙烯泡沫塑料和聚氨酯硬质泡沫的阻燃性指标？

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Olympic flame is the highest symbol of the Olympic spirit, which convey the "peace, friendship and progress" concept.

奥林匹克圣火是奥林匹克精神的最高象征，它传递着“和平、友谊、进步”的理念。

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The research progress of preparation technology and application as flame-retardant in plastic of zinc borate were reported.

综述了硼酸锌的制备工艺及其在塑料中作为阻燃剂的应用研究进展。

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And he insisted the "flame" of progress no longer burned for Labour, and that the Lib Dems are the only party capable of rebuilding the country.

BBC: Turn to us in crisis, says Clegg