n.疊印；重疊

Future shock arises from the superimposition of a new culture on an old one. 未來沖擊來自新文化與舊文化的重疊。

The superimposition method adds a signal at its resonance frequency with a signal at the subharmonic frequency. 本研究并提出兩類波形以有效誘發(fā)穴蝕效應(yīng)，分別為串接法及重疊法。