For its part , RAF says any scrapped jets must come from the navy's Harrier squadrons.至于英国皇家空军(RAF)则表示,若要削减战机,只能削减海军的“鹞 ” 式飞机(Harrier)舰队.Most species of harrier are included in the genus Circus.大多数种类的鹞包含在鹞这个种属中.A : ...
两个自由羟基,都容易酯化.Both the free hydroxyl groups readily undergo esterification.多数情况下水解速度较酯化速度低得多.The rate of hydrolysis is for the most part significantly lower than the esterification rate.探讨了PET酯 化、聚合生产过程对熔体直接纺丝的影响.The effe...
他划掉了“编剧”二字，改为“作者”。He crossed out "Screenplay" and put "Written by" instead.周四晚上9点英国广播公司电视二台开始播放他的新连续剧。He begins his new series on BBC 2 at 9pm on Thursday.问他懂哪些英文词，塞姆科先生不假思索地回答：“一，二，三。”Asked what English he knew, Mr Semk...