... observation monument 观测标志 observation perforation 观测孔眼 observation point 观察点 ...
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The evolution of the perforation plates of the vessel elements and the systematic position of genus Souliea were discussed in the paper based on the present observation .
根据观察结果， 对导管分子穿孔板的演化及黄三七属植物的系统位置进行了分析。
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