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placental nutrient transfer
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placental nutrient transfer
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placental nutrient transfer
胎盘养分转运
通过胎盘绒毛间隙内母体与胎儿血液间的物质交换,供应胎儿所需要的养分,运走胎儿代谢废物,以维持胎儿正常发育的生理过程。
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land bridge transport
Land Bridge Transportation Corridor
land capability evaluation
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land clearing blade
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land contracting right
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land cover change
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land degradation in China
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