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格式
复杂轨迹的凸轮连杆机构(Cam and bar mechanism for complicated trajectory )
复杂轨迹的凸轮连杆机构(Cam and bar mechanism for complicated trajectory )
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复杂轨迹凸轮杆机构(Cam and bar mechanism for complicated trajectory)
复杂轨迹凸轮杆机构(Cam and bar mechanism for complicated trajectory)
复杂...
船舶螺旋桨螺距调节机构(Pitch adjustment for boat propeller)
船舶螺旋桨螺距调节机构(Pitch adjustment for boat propeller)
船舶螺旋桨螺...