1·Objective To improve the understanding of pneumocystis carinii pneumonia (PCP) and investigate the role of electron microscopical examination in the diagnosis of PCP.
目的提高对卡氏肺囊虫肺炎（PCP）的认识，探索电镜对卡氏肺囊虫肺炎的诊断意义以及预防PCP的方法。
2·The cause for corrosion-induced failure of inner cavity of pulsation vacuum sterilizer was analyzed through physical and chemical inspection, macroscopical and microscopical examination.
通过理化检验和宏微观检查，分析了脉动真空灭菌器内腔开裂失效的原因。