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In the first section, we introduce some backgrounds and recall the definitions of weak action. crossed product and twisted H-module. At the same time, we give Lemmas 1.3. 1.5 and 1.6 being used in the following sections.

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We prove the Fundamental Theorem of the entwined modules and give a necessary and sufficient condition for the R-twisted product of two bialgebras to be a bialgebra.

主要證明了纏扭模上的基本定理；給出了兩個雙代數(shù)的R-扭積是雙代數(shù)的一個充要條件亚洲一级黄色。