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受精
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受精
Encyclopedia
理学
受精(植物)
释
fertilization(plant)
受精(植物)
通常有广义和狭义两个概念。广义概念指从花粉落在柱头上到精卵融合完成的整个过程,因此,受精过程可分为两个阶段,即配子配合前阶段和配子配合阶段,这一概念通常用于被子植物。狭义概念仅指雌雄配子的融合过程。
理学
受精
释
fertilization
受精
单倍体的精子和卵子相互结合并融合形成双倍体合子的过程,是有性生殖生物个体发育的起点。
Biology
fertilization; spermatization
受精
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oil service test
oils for injection
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oil shale evaluation
oil shale reserves distribution
oil simulation evaluation
oil spill
oil spill accident in offshore oil exploitation
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oil spill of submarine pipeline
oil spill recovery technology
oil spill treatment technology
oil stability index
oil stand evaluation
oil station
oilstone
oil-submerged motor
oil supply system for steam turbine
oil supply system of hydropower station
oil system firing
oil tank cleaning operation safety
oil tank corrosion
oil tank damage
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