单词	备用电键
释义	同应急电键--备用电键
随便看	paralleltonart {ger.} parallel-t oscillator parallel to serial parallel to serial--conversion parallel-to-serial converter parallel to the axis of tilt parallel to the principal line parallel track search parallel transfer parallel transformation parallel translation parallel transmission parallel--transmission parallel transmission unit paralleltrapez parallel traveling drill boom parallel tube circuit parallel turn parallel twinning parallel two-way join parallel-type substitution parallel unconformity parallel unisons parallel variation parallel vector operation