求翻译：每组随机选取两例行纤毛电镜扫描和上皮细胞投射检查（在取完右侧肺叶标本后，游离右侧结扎线以下部位的主支气管，冲洗干净后放入2.5%戊二醛中固定2-4小时）。样本是什么意思？

Each group were randomly selected two routine cilia scanning electron microscopy and epithelial cell projection to check (in taking the right lobe specimens, the main bronchus of the following parts of the free right side of the ligature, rinse into a fixed 2.5% glutaraldehyde 2 - 4 hours). Sample

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Each group selects two routine cilium electron microscope scanning and the epithelial cell projection inspection stochastically (after takes right flank lobe of the lung specimen, right flank dissociation ties up below line spot main bronchial tube, after flushing clean puts in 2.5% glutaric dialdeh

Each group of randomly selected two electron microscopic scan routine cilia and epithelial cells projecting to check (after you take the right Lobectomy specimen, free ligation line following parts on the right main bronchus, rinse into three glutaraldehyde fixed 2.5% after hours). Sample

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