在研究凸透镜成像的实验中保持凸透镜的位置不变先后把烛焰放在abcd各点如图所示分别调整光屏的位置则 �把烛焰放在 点时光屏上 Template




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tomski在研究凸透镜成像的实验中保持凸透镜的位置不变先后把烛焰放在abcd各点如图所示分别调整光屏的位置则 �把烛焰放在 点时光屏上 coloring