The blended chips containing 10 % ~65 % of n - Eicosane were fabricated with n - Eicosane, polyethylene ( PE ) and ethylene - propylene copolymer. 以正二十烷 、 聚乙烯和乙丙橡胶等为原料经熔融挤出,制成正二十烷含量10%~65%的共混切粒.
英国广播公司刚刚成功地演示了一套新的数字无线电传输系统。The BBC has just successfully demonstrated a new digital radio transmission system.凯瑟琳演示了洁面的正确方法。Catherine demonstrated the proper way to cleanse the face.采用了演示及播放电影和录像带的形式，以起到教育作用。Demonstrati...
这位酒吧侍者已经应付不过来客人的点单。The bar waiter was already overloaded with orders.我们准备了40个客人的饭菜,但只来了20个人.We catch for forty but only twenty came.每扇门上都有张卡,上面印着客人的名字.There was a card on each door with a guest's name inscribed ther...
Her injured arm pained her sharply.她那受伤的手臂使她感到剧烈疼痛。This public acknowledgment of Ted's disability pained my mother...这一下大家都知道了特德的残疾，这让母亲非常痛苦。At the community centre, mention of funds produces pained looks.在社区中心一提到资金...