a.瞬间的,即刻的instantaneous
瞬时螺旋轴instantaneous screw axis
瞬时空间instantaneous space
瞬时幅度instantaneous amplitude【电子】
瞬时可用性instantaneous availability【计】
瞬时判断instantaneous judgment
【计】 瞬时通信instantaneous communication
瞬时旋转中心instantaneous center of rotation