117．Equally important is the fact that the execution of multiple—step tasks is accomplished in aseries—parallelsequence．

(倒装句)

同样重要的是一个事实：多步任务是按照系列—平行序列完成的。

分句1：Equally important is the fact

分句2：that the execution of multiple—step tasks is accomplished in aseries—parallelsequence

1和2嵌套