FamousInventionsandT的知识精选

FamousInventionsandTheirInventors   X-rayswerediscovere...
问题详情:FamousInventionsandTheirInventors   X-rayswerediscoveredin1895byaGermanprofessor,WilhelmRoentgen.Peopleallovertheworldwereamazedbyhisinvention,theX-raymachine.Thisinventionwassoimportanttha...
热门标签