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bordered pit
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bordered pit
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理学
〔植物形态与结构〕
释
bordered pit
具缘纹孔
纹孔边缘的次生壁向中央隆起,悬在纹孔腔上,形成一个穹形的边缘,纹孔口明显变小的纹孔。
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bordered pit
具缘纹孔
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