Polyurethane elastomers based on glycols ( PEA, PPG PTMG ) , diisocyanate ( TDI ) and chain extender ( E - 300 ) were prepared.以多元醇 ( PEA, PPG,PTMG ),PDI, E300为原料,制备了 PU 弹性体.A new process of Hydration of propylene oxide ...
The 77,000-acre estate contains five of the highest peaks in Scotland.7.7万英亩的私人土地上有5座苏格兰最高的山峰。Ferries are a lifeline to the far-flung corners of Scotland.渡船是苏格兰边远地区的生命线。This is almost the mirror image of the situation in...
Most villagers took communion only at Easter.大部分村民只在复活节的时候领受圣餐。He lived in close communion with nature.他的生活与大自然亲密交融.Communion was celebrated by the Reverend John Harris.圣餐仪式由约翰·哈里斯牧师主持....
The film was frighteningly realistic.该影片逼真得令人害怕.As the sparks died away, the sky seemed darker than ever , even frighteningly black.火花散落, 空中越发显着黑, 黑得几乎可怕.The word " lost -- lost -- lost " dinged frighteningly in her hear...