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- pollen tetrahedron 花粉四面体
- There is a high pollen count in the air. 空气中有很高的花粉计数。
- Stamen is in the middle of a flower and may produce pollen. 雄蕊长在花的中央，能产生花粉。
- A microscopic fossil, as of a pollen grain or unicellular organism. 微体化石一种微小的化石，如花粉粒或单细胞有机体的化石
- The workers have little pollen baskets on their legs. 工蜂脚上有装花粉的小"篮子"。
- Anther is a part of a flower that contains the pollen. 花药是花的雄蕊上带花粉的部分。
- The Rubik's is a toy in the shape of a tetrahedron. 魔方是个四面体的玩具。
- The innermost wall of a spore or pollen grain. 内壁孢子或花粉粒最深处的壁
- Pollen morphology of Vaccinium ashei was investigated by scanning electron microscopy.Most of pollen grains are tetrahedron with tetrad construction. 摘要扫描电镜下，兔眼越桔花粉为四合体，外形为准四面体，中等大小，表面具不规则皱波状纹饰，并有多处凹陷。
- Pollen sterile blossoms lack normal turgor. 花粉不育的花朵缺乏正常的膨压现象。
- The pollen is shed directly on the stigma. 花粉直接散落在柱头上。
- Some people have an allergy to pollen. 一些人对花粉有过敏反应。
- Nectar and pollen are very nutritious. 花蜜和花粉是很有营养的。
- Pollinated by wind-dispersed pollen. 风媒传粉的通过风的飘散来传播花粉的
- The internal structure of silica has a pyramid(tetrahedron) unit. 硅的内部结构是一个四面体。
- Productivity system is a dynamic "tetrahedron" in an abstract term. 生产力系统抽象地看是一个处于动态的“四面体”;
- This is the top view of an oxygen-silicon tetrahedron. 这是一个硅氧四面体的俯视图。
- Both the pollen grains and the gynoecia are active. 花粉粒和雌蕊都具有活力。
- The microspores in tetrad stage showed tetrahedron structure. 小孢子四分体为四面体型。
- Seeds and pollen are spread by the wind. 种子和花粉是随风传播的。
