The research humanity on metallogenetic phenomena fact is the research on correlation problems of metallogenesis.人类对成矿现象的研究,其实是对成矿相关性问题的研究.The description of atmospheric dispersion phenomena remains quasi - empirical and...
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...