FAQ
The descriptions of ghost touch weapons on pages 224
and 225 of the Dungeon Master’s Guide says that a ghost
touch weapon functions as either a corporeal or an
incorporeal object, whichever is more beneficial to the
wielder at the time. Does that mean that ghost touch
weapons also ignore armor and natural armor bonuses to
their target’s AC in the hands of corporeal creatures?
No, it does not. Ghost touch weapons allow corporeal
wielders to strike incorporeal targets (and manifested ghosts)
with no miss chance. They also allow manifested ghosts to
make normal attacks (not incorporeal touch attacks) against
targets on the Material Plane. An incorporeal creature or
manifested ghost can also pick up and move a ghost touch
weapon and can carry it along when the creature moves
through a solid object. It is the latter property that’s being
described in the text you’re quoting.
发烧好难受:em023