Aconite , which paralyses the nerves, normally takes only 30 minutes to kill.乌头可以麻痹神经, 通常服后30分钟后即可致命.Also known as monkshood or aconite.也称舟形乌头或乌头.Respiratory disorders, cough and hoarseness with painful burning throat. A...
All commercial nuclear power is provided by fission at the present time.目前所有的商用核动力都是通过核裂变产生的.Caesium - 137 is a radioactive isotope, formed mainly through nuclear fission.铯-137是一种放射性同位素, 主要由核分裂产生.The fission of the cell ...