School;
of;
Mathematical;
Sciences,;
Peking;
University,;
Beijing;
100871,;
Chine;
Department;
of;
Mathematics,;
Shandong;
Institute;
of;
Architecture;
and;
Engineering,;
Jinan;
250101,;
China;
comodule; algebra,; generalized; smash; product,; Morita; context.;