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 ...
They live in a village embosomed with hills.他们住在群山环抱的村庄里.The cottage was embosomed in trees.这幢农舍为树木所环抱.The castle was embosomed in huge rocks.那座城堡有巨岩围绕着....
Cameron: Ah that's because I went home to Scotland for Hogmanay.卡梅伦: 我回故乡苏格兰过霍马内.Freddie: Hogmanay? What's that? It'sounds like an illness.弗雷迪: 霍马内? 那是甚 麽 ?听来像是一种疾病.Hans took a drop too much, but I'll...
载人宇宙飞行的前景看上去充满了越来越多的变数。The future for manned space flight is looking increasingly uncertain.作为摩托车初学者，切勿后座载人。As a learner rider you must not carry a pillion passenger.载人的潜水器与宇宙飞船一样, 必须在非自然的环境下保持生存条件.Manned submersibles, l...