XOR=Exclusive OR “异” 或(逻辑运算)XXs或 X's,X级电影, 成人电影(十八岁以下儿童不得观看)xylylmethylhydantoin二甲苯基甲基乙内酰脲X bar control figure平均值控制图x ray diffractometer伦琴射线衍射仪,x 射线衍射仪x-ray transmission厚度影响XD strain of virus X病毒X中的XD毒株X-ray photograph X射线照相Xysticus ephippiatusn.鞍形花蟹蛛Xysticus torsivoidesn.似旋花蟹蛛xylidine formic acid对二甲氨基苯甲酸X- ray irradiation放射线