radially symmetrical 中文意思是什麼
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Body is radially symmetrical and covered with numerous short spines, measures 5 - 7 cm across
身體對稱，布滿無數短針，直徑長約五至七厘米。 -
The results indicate that pollen grains radially symmetrical, apolar, spheroidal, the exine with distinct spines and temuity or perforation, usually the spines very small and dense
7urn ，無極面、無萌發孔。花粉粒表面具三角形或乳突狀小刺，小刺密集整齊，密度在（ 2
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