I have patients who are HIV-positive and asymptomatic.我的一些病人艾滋病病毒检测呈阳性，但却无任何体征。His estimate of half a million HIV positive cases was based on an extrapolation of the known incidence of the virus.他估计有50万个HIV阳性病例，这是根据已知的病毒...
Objective Purificating no hemorrhage of fibrinolytic enzyme from Agkistrodon halys venom.目的从江浙蝮蛇蛇毒中纯化出无出血毒的纤溶酶.Agkistrodon halys pallas belonging to viper family is only growing in China.江浙蝮蛇属蝰蛇类,是我国特有的蛇种.Objective To ex...
用钢琴伴奏的传统歌曲traditional songs with piano accompaniment他演奏了不需伴奏的小提琴乐曲.He played works for unaccompanied violin.诗歌吟唱试用七弦琴伴奏的.The poetry was chanted to the accompaniment of the lyre....