权威例句
Helvetica Chimica ActaFlora Helvetica =Fauna coleopterorum helveticaThe Intrusive ComputerHandhelds and Handing OffOpen Source and Selling OutEvidence of Rickettsia helvetica infection in humans, eastern France.Association of Rickettsia helvetica with chronic perimyocarditis in sudden cardiac death.Confirmation that Rickettsia helvetica sp. nov. is a distinct species of the spotted fever group of rickettsiae.A comparison of hirudin with heparin in the prevention of restenosis after coronary angioplasty. Helvetica Investigators.