2.Schoonover P L, Crossley W A, Heister S D. Application of a genectic algorithm to the optimization of hybrid rockets [ J ].Journal of Spacecraft and Rockets ,2000.
3.Tracheotomy was a term introduced by the German surgeon Heister in 1718. Other similar terms used before included bronchotomy and tracheostomy proposed by Negus in 1938. Being an old emergent operation, this operation can be traced back to the 1st century B. C.
