很多计算机病毒、蠕虫和特洛伊木马的设计都利用了弱口令。
Many computer viruses, worms, and Trojan horses are designed to exploit weak passwords.
应用组织学方法比较观察了猪繁殖与呼吸综合征病毒（PRRSV）弱毒细胞疫苗与灭活疫苗生殖道黏膜免疫的效果。
The effect of mucosal immune of porcine reproductive and respiratory syndrome virus (PRRSV) attenuated and disactived vaccine was investigated by histological method.
新城疫病毒B95 (NDV B95)是从国外引进的一株热稳定性的天然弱毒株。
Newcastle disease virus (NDV) avirulent strain B95 was newly introduced from abroad.
与病毒相比，真菌、细菌弱致病菌及其诱导抗病机制的研究相对滞后。
The study of resistance mechanism induced by fungi and bacteria lagged behind that of virus.
对分离的痘病毒进行动物致病性试验、病毒分离传代和致弱试验、致弱毒保护力试验和返强试验。
The virus was analyzed by the animal pathogenicity test, virus attenuation, protection of the attenuated virus and virulence return experiment.
患者缺乏依从性是重要的因素，但是这些耐药突变病毒在联合用药的患者中出现的较前弱的趋势也是有用的。
Problems with adherence were a factor, but such strains mostly arose in patients taking drugs that were less effective than the combination therapies that later became available.
患者缺乏依从性是重要的因素，但是这些耐药突变病毒在联合用药的患者中出现的较前弱的趋势也是有用的。
Problems with adherence were a factor, but such strains mostly arose in patients taking drugs that were less effective than the combination therapies that later became available.
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