PR段（PR segment）：反映心房的复极过 PR段 segment）： ）：反映心房的复极过 程及房室结和房室束的电活动， 程及房室结和房室束的电活动，正常为...
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As many PR pros have come to understand, this colorful, antithetical newspaper piece prompted interest from some salacious segment producers at a couple of network TV magazine shows.
FORBES: Picking Your TV Spots
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