XBM黑白位图文件格式。XXs或 X's,X级电影, 成人电影(十八岁以下儿童不得观看)Xylosandrus mutilatus Blandsford剪尾材小蠹虫XQvK EST Electronic Spark Timing电子点火正时X-ray diffraction phenomenon X射线衍射现象X-ray for diagnosis teleuision诊断用X射线电视机X-ray with narrow band spectrum窄谱X射线X -ray energy spectrum analysis能谱分析X-ray absorption spectrometry X射线吸收光谱法X-ray stereotactic radiotherapy立体定向放射治疗XW Infrared Sample Dyeing Machine新旺红外线染样机X-ray transmission photograph X射线透射照相