胚珠的
- 与 胚珠的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The carpel is homologous with the megasporophylls of certain spore-bearing vascular plants and the ovuliferous scales of gymnosperms.
心皮和能产生孢子的维管植物还有具胚珠的裸子植物的大孢子叶是同源的。
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Suppression of Sus ac tivity by 70% or more in t he ovule epidermis led to a fiberless
此类胚珠的棉纤维的起始很少或缩小。Sus 的抑制水平与纤维起始的抑制程度密
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One of the structural units of a pistil, representing a modified, ovule-bearing leaf.
心皮雌蕊的结构单位之一,表示一片变异的、含胚珠的叶子
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During male and female reproduction organ developments, CBKs were expressed obviously in temporal and spatial difference manners, especially in pollen development, tapetum cell development and degeneration and ovule development.
这种差异性突出体现在花粉细胞的发育、绒毡层细胞的发育和凋亡以及胚珠的发育等过程中。
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Fruit drupaceous, of separating mericarps or ± completely syncarpous, drying brown to black or rarely pale gray-brown when ripe; abortive carpels, if any, persistent; outer pericarp ± fleshy; endocarp bony next to locule, otherwise woody, in mericarps developed from 2-ovuled carpels forming a median longitudinal partial partition within locule.
果核果状,有分离的分果瓣或者多少完全的合心皮,成熟后变干,棕色或黑色,很少灰棕色;败育心皮,如果有的话,宿存;外部果皮多少肉质;内果皮骨质或木质,在分果瓣里内果皮由2胚珠的心皮在每室内形成中间的分隔。
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For example,the spiral arrangement of scale-bract complexes on ovule-bearing pine cones,where the female reproductive organs of conifers are located,is important to the production of airflow patterns that spiral over the cone's su***ces,thereby passing airborne pollen from one scale to the next.
例如,带有胚珠的松球的鳞苞综合体的螺旋状安排,亦即松柏目植物雌性殖器官的所在位置,对于气流模式的形成与产生殊为重要,而这些气流模式在松球的表现盘旋上升,从而把在空气中飞行的花粉从一个鳞苞传播至下一个鳞苞。
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For example,the spiral arrangement of scale-bract complexes on ovule-bearing pine cones,where the female reproductive organs of conifers are located,is important to the production of airflow patterns that spiral over the cones surfaces,thereby passing airborne pollenfrom one scale to the next.
例如,带有胚珠的松球的鳞苞综合体的螺旋状安排,亦即松柏目植物雌性殖器官的所在位置,对于气流模式的形成与产生殊为重要,而这些气流模式在松球的表现盘旋上升,从而把在空气中飞行的花粉从一个鳞苞传播至下一个鳞苞。
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For example, the spiral arrangement of scale-bract complexes onovule-bearing pine cones, where the female reproductive organs of conifers
例如, 带有胚珠的松球的鳞苞综合体的螺旋状安排,亦即松柏目植物雌性殖器官的所在
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FOR EXAMPLE, THE SPIRAL ARRANGEMENT OF SCALE-BRACT COMPLEXES ON OVULE-BEARING PINE CONES, WHERE THE FEMALE REPRODUCTIVE ORGANS OF CONIFERS ARE
例如,带有胚珠的松球的鳞苞综合体的螺旋状安排,亦即松柏目植物雌性殖器官的所在
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He describes the effective pollination periodas the longevity of the ovules minus the time lag between pollination and fertilization.
他把有效的授粉阶段描述为胚珠的寿命减去授粉和受精之间的时间段。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力