自动弹出显示图片机构(Automatic display of pop-up pictures )
自动弹出显示图片机构(Automatic display of pop-up pictures )动画演示
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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...
调整曲柄半径机构动画演示(Adjusting crank radius without stopping it)
调整曲柄半径机构动画演示(Adjusting crank radius without stopping it)
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不间断可调线性振荡机构(Nonstop regulatable linear oscillation)
不间断可调线性振荡机构(Nonstop regulatable linear oscillation)动画演示
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