【机】 圆柱摩擦轮

cylindrical grinding wheel great wheel friction spring chronograph wheel friction circumferential friction wheel spur friction wheel disk friction wheel friction wheel integrator wheel friction loss click wheel friction spring chronograph wheel friction foot alarm friction wheel corrector setting wheel friction spring cylindrical wheel friction wheel rigging-angle friction wheel friction wheel speed counter disc friction wheel friction ratchet wheel friction-wheel tachometer wedge friction wheel friction-wheel feeder