How such extensive damage could have been sustained so quickly remains unexplained.如何这么快就造成这么大的破坏依然不得而知。He died in unexplained circumstances.他死因不明。Soon after leaving Margate, for some unexplained reason, the train was br...
提出了一种非线性自适应最优励磁控制器.The paper presents a novel nonlinear adaptive optimal excitation controller.补偿器的输出信号作用在本地发电机励磁系统.The compensator is added in excitation system of the generator.交流励磁是一种好解法对这个问题.AC excitation is a good s...
他们给他看了那个书套的一幅拼贴画.They showed him a paste - up of the book jacket.精细清洁复制罚款书套.Fine clean copy in a fine slipcase.书套是赠送的.Book jackets are free of charge....