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vegetation
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bottom bracket placenta
Contents
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No. 1
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Containing Phrases
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No. 1
中轴胎座
(axial placentation):雌蕊由多心皮构成,各心皮互相连合,在子房中形成中轴和隔膜,子房室数与心皮数相同,胚珠着生在中轴上,如棉、柑桔等的胎座式。
Containing Phrases
bottom bracket placentation
tool Bottom bracket placental