McDonnell received a contract in February 1952 for two prototypes of the single - engine, two - seat XV - 1 .麦收到了合同,1952年2月2原型的单引擎, 两个座位的第XV -1.RESULTS: Sixteen perlolyrine analogues were synthsized ( I ～ XVI ). Of them,...
Joan of Arc was finally canonized by Pope Benedict XV in 1920.圣女贞德终于在1920年由教皇本尼狄克十五世封为圣徒。XZ ( Red ): A rapid metal removel media , heavy than XV, make a smooth surface.红色 ): 快速切削的磨块,比XV重, 能产生光滑的表面.McDonnell received a co...