The mature pollen grain is 2-celled.
成熟花粉为2 -细胞型。
The mature pollen grain is of 2-cell.
成熟花粉为二细胞型。
But H8 strain's pollen grain of SP3 generation is distorted and shrunken.
而SP3代H 8株系两性花的花粉粒皱缩、扁瘪、塌陷。
The polysaccharoses present in the mature pollen grain accompary with proteins.
成熟花粉粒中多糖和蛋白质并存。
The pumpkin pollen grain in the middle is0.2mm and just about visible to the naked eye
中间的南瓜花粉有0.2毫米，肉眼刚刚能看见。
Pollen grain is mainly 2-celled type when shed, occasionally 3-celled type, and has three apertures.
成熟花粉多为2 -细胞型，偶见3 -细胞型，具三萌发孔。
It has been magnified 115 times, but it contains long hairs such as cat fur, twisted synthetic and woollen fibres, a pollen grain, plant and insects.
它被放大了115倍，其中包括猫毛、扭曲的合成和羊毛纤维、花粉粒、植物和昆虫之类的长毛。
In present work, the development of anther, formation of pollen grain and development of ovule and formation of embryo sac in Ramie were observed.
本工作对苎麻花药的发育和花粉粒的形成、胚珠的发育和胚囊的形成进行了观察。
Household dust which includes long hairs such as cat fur, twisted synthetic and woollen fibres, serrated insect scales, a pollen grain, plant and insect remains.
家庭灰尘，可以看到包括猫毛，扭曲的合成和羊毛纤维，锯齿状的昆虫鳞屑，花粉粒，植物和昆虫尸体。
The results showed that the pollen shapes of all 11 cultivars were near spherical in equatorial view. The size of pollen grain showed great variation among cultivars.
结果表明：11份花粉都呈近球形，花粉粒大小在所观察的材料间有较大差异。
Surface structured silica hollow microspheres were synthesized using the rape pollen grain as a biotemplate via a facile sol-gel method and a succedent calcinations process.
利用油菜花粉作为生物模板，通过溶胶在花粉颗粒表面包裹，再经高温烧结去除花粉颗粒的方法制备了具有特殊表面形貌的二氧化硅中空微球。
There occurs pollen abortion during the stage from tetrad to single nucleus pollen grain of cytoplasmic male-sterile line in Brassica napus Var. oleifera(Raphanus sativus L. ).
甘兰型油菜萝卜细胞质雄性不育系的花粉败育发生在四分体至单核花粉粒阶段。
The ubisch bodies which appeared on the inner tangential wall of the tapetum at the time of microspore wall formation are partially remain on the surface of matured pollen grain.
小孢子壁形成时开始在绒毡层内切线壁出现的球状体到花粉粒成熟时仍有一部分附着于花粉粒表面。
The sediments contained fossil pollen. Each grain had a telltale carbon atom signature, allowing them to put the samples in chronological order.
沉积物内含有孢粉化石，而每一粒孢粉都含有能告诉我们答案的碳原子标记，容许我们按照地质时间的顺序分析样品。
This picture shows a grain of willow pollen wedged between flower petals.
这张图片显示了嵌入花瓣间的柳树花粉颗粒。
It's hard to believe something as small as a grain of pollen could cause so much misery.
很难相信的东西作为一个小的花粉可能导致粮食这么多的苦难。
It is better to use the grain amount of single pollen in its main pollen season to analyze the relationship with meteorological factors.
在分析气象因素与空中飘散花粉粒数的相关性时，最好选择单种花粉粒，并选择其飘散较为稳定的时段进行。
Results Observation of 14519 grain of airborne pollen per one year.
结果一年的曝片调查，共观察到14519粒花粉；
The Holocene stratum of Quzhou district is quite different from other areas of Hebei Plain in terms of the buried depth, thickness, depletion rate, color, grain size, structure and pollen assemblages.
河北平原南部曲周地区的全新世地层，在埋藏深度、地层厚度、堆积速率和颜色、粒度结构、孢粉含量与种属等方面，与河北平原其他地区不同。
The Holocene stratum of Quzhou district is quite different from other areas of Hebei Plain in terms of the buried depth, thickness, depletion rate, color, grain size, structure and pollen assemblages.
河北平原南部曲周地区的全新世地层，在埋藏深度、地层厚度、堆积速率和颜色、粒度结构、孢粉含量与种属等方面，与河北平原其他地区不同。
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