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Reversals
[rɪ'vɜ:slz]
例句/造句/用法:
Proper
reversals
of
the
current
are
accompanied
by
continuous
motion
,
and
since
the
disk
and
shaft
rotate
with
the
coil
,
there
is
continuous
rotation
.
伯莎M.克拉克.
科學通論
.
When
such
reversals
do
not
take
place
,
the
currents
are
said
to
be
direct
.
佚名.
神奇的知識之書
.
校對:诺艾尔
