The problem occurs because plants need to transfer pollen by wind and insect to fertilization and reproduction.
这个问题的出现是因为植物需要通过风和昆虫来传递花粉以受精和繁殖。
The problem occurs because plants need to transfer pollen by wind and insect to fertilization and reproduce.
发生这样的问题是因为植物需要通过风和昆虫传递花粉进行受精繁殖。
Pollen from a Pistia: Hayfever occurs because plants need to transfer pollen by wind and insect to fertilization and reproduce.
水浮莲花粉：发生花粉热是因为植物需要通过风或昆虫传递花粉进行受精繁殖。
They transfer pollen from one plant to another.
他们转让的花粉从一个工厂到另一个。
Pollination is the mechanical transfer of pollen from the anthers to the stigmas.
授粉是机械地把花药里的花粉传送到柱头上去。
Transfer of pollen from one plant to another; cross-pollination.
异花受粉把花粉从一棵植物传到另一棵里；
Transfer of pollen from one plant to another; cross-pollination.
变态反应原，过敏原一种可引起过敏的物质，如花粉。
The direct gene transfer systems involved the chemical method (PEG), electroporation, microinjection, particle bombardment, pollen-mediated gene transfer and other systems using various vectors.
阐述了化学导入法(PEG)、电穿孔法、注射法，粒子轰击法、花粉管萌导法及使用其它载体系统的成功实例。
With flowering plants with only a small part of the self-pollination, the transfer of its pollen is usually dependent on certain pollinators.
具花植物除少部分自花授粉外，其花粉传递通常依赖于一定的传粉媒介。
Modern pollen data from surface samples, reflecting present vegetation types across the eastern part of China, were used to set up pollen climate transfer functions.
取自中国东部区域的表土层孢粉数据被用来建立孢粉-气候转换函数。
Modern pollen data from surface samples, reflecting present vegetation types across the eastern part of China, were used to set up pollen climate transfer functions.
取自中国东部区域的表土层孢粉数据被用来建立孢粉-气候转换函数。
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