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)X-ray spectrogram X射线谱图xylo-oligosacchande低聚木糖Xylosma Forst. f.[医] 刺柞属，柞木属X-ray radiography X射线放射照相X-style arch bridge提篮拱桥xylose clearance test[医] 木糖廓清试验(检肾机能)X-ray emission gage爱克斯射线发射表xylitol dehydrogenase木糖醇脱氢酶X-ray diffraction X射线衍射X-ray rocking curve摇摆曲线