【摘要】 目的：探讨人蛲虫卵石蜡切片标本发生变形的力学原因。方法：根据人蛲虫卵壳的形态特征和标本制作过程的受力状态，用薄壳的弹塑性力学理论分析在卵壳内部发生的应力。结果与结论：标本制作过程由于技术掌握不当，可在卵壳内外产生较大的压差而使卵壳发生永久塑性失稳变形，变形最易在卵的两侧壳最薄的部位发生。更多还原

【Abstract】 objective: To explore the cause of the eggs shell of E.vermicularis presented deformation during the making of the sample of paraffin section. Methods:Based on the morphologic feature of eggs shell and the recived pressure which was presented during the sample of eggs was made, the internal stress of eggs was analysed by meaus of the theory of elasticity-plastic mechanic. Result and Conclusion: The permanent deformation of egg-shell in paraffin-section caused by an overpressue bring to bear on the egg-shell out during the sample was made using improper technigue. The most deformed place of egg-shell were located in the lateral.更多还原