After preliminaryinvestigations, it was concluded this month that the cause is not seasonal influenza but rather an entirely new hybrid strain composed of pig, bird and human viruses.
According to preliminaryinvestigations by concerned parties, the cause of the failure was that the satellite's apogee engine was unable to normally operate because of a breakdown in the fuel valve.
据有关方面初步调查,卫星的远地点发动机因燃料阀发生故障不能正常运转是造成失败的原因。
3
Preliminary tests reveal no significant changes in the pandemic (H1N1) 2009 virus based on investigations of samples taken from patients in Ukraine.