exine
英['eksiːn]
美['ekˌsaɪn]
- n. 外膜；外壁
双语例句
- 1. Alveolae of the proximal exine are smaller and less regular in form than those at equatorial region.
- 近极区的穴较之赤道区的要小且形状较不规则。
youdao
- 2. Except for some differences in exine ornamentation and pollen size, there is no great evolutionary divergence among genera in pollen morphology.
- 总体来讲，花粉没有大的演化分异，只是表面纹饰和花粉大小有一定的差异。
youdao
- 3. Method: Pollen exine ultrastructure were compared for 18 populations growing under in the same environment by means of scanning electron microscope (SEM).
- 方法：借助扫描电镜对栽培在同一生境下的18个半夏居群的花粉形态、大小及表面纹饰等特征进行观测比较。
youdao
- 4. Method: Pollen exine ultrastructure were compared for 18 populations growing under in the same environment by means of scanning electron microscope (SEM).
- 方法：借助扫描电镜对栽培在同一生境下的18个半夏居群的花粉形态、大小及表面纹饰等特征进行观测比较。
youdao
- The ornamentation of exine is reticulate, reticulate-microperforate or microperforate.
外壁纹饰网状，某些种尚具或为细小的穿孔。 - When the pollen grains were continuously rehydrated in vitro, the exine and intine will separate from the protoplasm, respectively.
将成熟花粉水合后，其细胞质膨胀，挤压花粉壁使其外壁与内壁，接续与细胞质分离。
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