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...
5公开的责备强如暗中的爱.Open rebuke is better Than love that is hidden.莫仑霍和他自己就是暗中的敌手.Mollenhauer and himself were silent rivals.在我们安静的时候,我们祷告我们在暗中的父,在那里“他将我们藏在他帐幕的隐密处. ”In our quiet time we have to pray to our Father which is in s...