momentaryadj.短暂的；瞬间的；刹那间的；时时刻刻的momentary speed variation速度变动率momentary-contact switch瞬时接触开关momentary mechanical system瞬时机械系统momentary side feint support环外侧撑稍停momentary duty electromagnet瞬时作用的电磁铁momentary high-power effort瞬时功率增加momentary-duty electromagnet瞬时作用的电磁铁momentary interests of the day眼前利益momentary or maintained contact瞬时或持续接触momentary-type contact push button瞬间接触式按钮