p.m. PM

P.m.(pm)可以与o’clock连用吗?--兼与人教社编辑商榷
Sur l'équation x pm-1 + y pm-1 + z pm-1 0 mod p m  = On the equation x pm-1 + y pm-1 + z pm-1 ≡ 0 mod p m
P.M. the PM
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