按照题目要求作图1如图作出光线通过凹透镜的光路.2如图是甩开瓶扳手打开瓶盖的示意图.o为支点画出动力f的力臂l1和阻力f2的 Template




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tomski按照题目要求作图1如图作出光线通过凹透镜的光路.2如图是甩开瓶扳手打开瓶盖的示意图.o为支点画出动力f的力臂l1和阻力f2的 coloring