Extonn.埃克斯顿EXTabbr.扩展（=extension）abbr.外面的；外部的（=exterior）abbr.额外的（=extra）extenics evaluating可拓评判extremum estimation极值估算externo-dorsal ray外背辐肋extrustion of metals金属件冲压extensometer balance变形秤extruding die design模具设计extrudate distortion挤出物畸变exteroceptive system[医] 外感受系统exteral throat toxin外喉症extruding experiment膨化试验