小红用显微镜观察人口腔上皮细胞和洋�表皮细胞的临时装片时看到的视野和操作的过程如图所示请你分析1要使镜筒下降需要转动3粗粗准焦 Template




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tomski小红用显微镜观察人口腔上皮细胞和洋�表皮细胞的临时装片时看到的视野和操作的过程如图所示请你分析1要使镜筒下降需要转动3粗粗准焦 coloring