吴玉琴，叶俏，陈小珍，张纯，戴训芬，李约曼，张飞云，李跃，郑承婉，胡洪佩目的昏迷患者下呼吸道感染危险因素，并采取相应的降低感染率的护理措施。
Objective To study on risk factors of ICU coma patients who suffered from low respiratory tract infection(hospital acquired pneumonia, HAP), then perform relevant nursing care to reduce the HAP rates.
结果表明，冰雹云形成演变常有发生、跃增、酝酿、降雹和消亡五个阶段。
It is shown that in the process of hail-cloud formation there are usually five stages: emerging, leap increase, brew, hail fall and decay.
云体并合是雹云出现跃增的重要成因之一；
The cooperation of clouds is one of the important causes to drive leap increase of hail-clouds;
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