The results showed that PU elastomers with broad glass transition temperature and damping temperature could be prepared with three soft segments by semi-prepolymer method at appropriate conditions.
结果表明，选择适当的软段组分和制备条件，通过半预聚体方式制备三软段聚氨酯弹性体是可行的。
The forth part: the accompaniment of the Pu opera, explained from the three aspects, that is, the tunes, the band and the musical instrument.
第四部分：蒲剧的伴奏。从曲牌、乐队、乐器三方面阐述其艺术特色。
Dalian Jin, said in the three mountains, three mountains, said Pu Tang, Ming and Qing dynasties, said three mountains to the sea, blue Niwa mouth.
大连地区在魏晋时称三山，唐朝时称三山浦，明清时称三山海口、青泥洼口。
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