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siphonosteles
siphonosteles
美
英
n.
【植】管状中柱
网络
管状中心柱;虹吸管;管状中轴
词形变化
复数:
siphonosteles
英汉解释
n.
1.
【植】管状中柱
英英解释
n.
1.
a
type
of
vascular
cylinder
,
found
in
many
ferns
,
in
which
the
water
-
conducting
vessels
of
the
stem
are
arranged
around
a
central
core
of
pith
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