Her brother was an accomplished linguist.她的哥哥能熟练地说好几种语言。She's an excellent linguist.她精通数国语言。I used to be a linguist till I become a writer.过去我是个语言学家,后来成了作家....
He had to repair the wagon, grease the axles.他得去修理大车, 给车轴涂油.The springs are placed between the frame and the wheel axles.弹性元件装在车架和车桥之间.An increasing number of train designs incorporate hollow axles.火车空心轴一体化的数量逐渐递增....
建立了砂轮的球基渐开螺旋面方程和分度球面螺旋线方程,给出螺旋运动参数、螺旋线导程.The mechanism of grinding internal gear of spherical worm emery - wheel is researched.正圆锥螺旋面是正圆柱螺旋面被同轴正圆锥面截得.The ortho cone helicoid was used interrsect intercept by the ortho con...