A method of high precision round subsection by varied lead-interval worm and worm wheel was introduced, its drive theory, clearance adjusted framework and machining method were analyzed.
介绍了一种采用变导程蜗轮蜗杆的高精度分度方法，分析变导程蜗轮蜗杆传动原理、变导程蜗轮蜗杆调隙结构和变导程蜗轮蜗杆加工和调整方法。
Charles looked round him at the dingy smoke-discolored walls, the worm-eaten staircase.
查尔斯环视被烟熏黑的墙壁和虫蛀的楼梯。
Charles looked round him at the dingy smoke-discolored walls, the worm-eaten staircase.
查尔斯环视被烟熏黑的墙壁和虫蛀的楼梯。
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