这种跃迁类型是在某一活动状态时完成某一活动所触发的。

It is a specific type of transition that is triggered by the completion of the activity represented by an activity state.

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跃迁表明了活动状态之间的顺序关系。

Transitions indicate which activity state follows another.

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第二晶体管(25)驱动输出(34)至低状态以便在下降跃迁中辅助。

The second transistor (25) drives the output (34) to a low state to assist in the falling transition.

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