某同学在做研究凸透镜成像的实验时保持凸透镜位置不变如图所示先后使烛焰位于abcd四点并分别调整光屏的位置.实验后他归纳出以下 Template




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tomski某同学在做研究凸透镜成像的实验时保持凸透镜位置不变如图所示先后使烛焰位于abcd四点并分别调整光屏的位置.实验后他归纳出以下 coloring