1用显微镜进行对光时转动转换器要使 物镜正对通光孔.如果�现外界光线较弱这时要想看到明亮的视野则用来调节光线强弱的结构是� 和� Template




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tomski1用显微镜进行对光时转动转换器要使 物镜正对通光孔.如果�现外界光线较弱这时要想看到明亮的视野则用来调节光线强弱的结构是� 和� coloring