Johnson Space Flight Center约翰逊航天中心 Joint Stock Financial Corporation金融集团股份有限公司 Joint Space Fundamentals Course关节腔基本课程 Java System Foundation Classes爪哇的制度基础课程 Joint Strike Fighter Competition联合攻击斗士的竞争 JavaServer Faces Compilation两者编译 Joubert Syndrome Foundation Corporation基金公司Joubert综合症