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)xylylene dichlorides二氯甲基苯xylenol orange resin二甲酚橙树脂xylylic acid nitrile二甲基苄腈X-ray hazard meter爱克斯危险性测量器X-ray dermatitis X射线性皮炎X-ray television X射线电视X-ray photometry X射线光度学Xylocopa yunnanensisn.云南木蜂Xysticus obtusfurcusn.钝叉花蟹蛛xylitan monostearate木糖醇酐单硬脂酸酯