The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces.作者证实:单叶双曲面和双曲抛物面是直线曲面.The mathematical model of the hyperboloid twist drill was introduced.介绍了以旋转单叶双曲面作麻花钻钻尖后刀面的数学模型.The...
From across the desk she gave him a witheringly imperious look.她从桌子对面扫了他一眼，目光咄咄逼人，凌利而专横。Guns fired witheringly at the railroad cars.枪一起对着列车车厢猛烈地、摧毁性地扫射.Katherine looked briefly and witheringly at Charley Lynch.凯瑟琳轻蔑地看了查利...
主场球队依靠默里·斯特朗的罚球而旗开得胜。The home side drew first blood with a penalty from Murray Strang.聆听着唱片里鲁比·默里演唱《丹尼男孩》的时候，他们泪眼模糊。They got misty-eyed listening to records of Ruby Murray singing "Danny Boy".阿瑟·默里教狐步舞、探戈和华尔兹。Arthur Murr...
他是个爱出风头、性格外向而且喜欢争论的人。He was a showman, an extrovert who revelled in controversy.他有一种活泼外向的幽默感，看上去大方自信。He has a lively sense of humour and appears naturally confident.她很外向，喜欢交朋结友。She is such a gregarious and outgoing perso...