12.小明在使用显微镜的过程中要将物镜由10×调换为40×需要调节 A.粗准焦螺旋 b.细准焦螺旋 C.转换器 D.遮光器——青夏 Template




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tomski12.小明在使用显微镜的过程中要将物镜由10×调换为40×需要调节 a.粗准焦螺旋 b.细准焦螺旋 coloring