XH, extra heavy ==> 超重的
XHV, extreme high vacuum ==> 极高真空
Xian High Voltage Apparatus Research Institute ==> 西安高压电器研究所
XIC, transmission interface converter ==> 传输接口转换器
XIO, execute input/output ==> 执行输入输出
XL, extra large ==> 特大号
XOR, exclusive OR ==> "异-或"逻辑,"异-或"运算,"异-或"门
XPR, exprivileges ==> 无优惠
XPS, X-ray photoelectron spectroscopy ==> X射线光电子能谱学
XRD, X-ray diffraction or X-ray diffractometer ==> X射线衍射或X射线衍射仪
XREP, auxiliary report ==> 辅助报告
XRF, X-ray fluoroscope ==> X射线萤光检查仪