1一个木块从斜面上�下并在水平面上继续�动.请分别画出如图木块在斜面和水平面时所受重力的示意图.2用�轮组提升重物在如图中画出最 Template




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tomski1一个木块从斜面上�下并在水平面上继续�动.请分别画出如图木块在斜面和水平面时所受重力的示意图.2用�轮组提升重物在如图中画出最 coloring