Comparing with polyurethane, the prospects of the applications of isobutene telechelic oligomer are presented.并与聚氨酯材料相比较;说明了聚异丁遥爪预聚物的主要应用前景.Tert - octylamine was prepared with di - isobutene and hydrocyanic acid as mine ...
But don't call him lucky, Pete, that's underrating him.但是,别说他侥幸, 彼得, 那样说就等于低估了他.Underrating has the advantage of increasing physical life.低负荷运行具有能延长物理寿命的优点.I still go on underrating men of gold.我仍瞧不起腰缠万金的人....