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Methods The effect of manganese vitriol on meiotic maturation and fertilization ability of mouse oocyte was studied by culture of mouse oocyte and in vitro fertilization (IVF).
方法采用小鼠卵母细胞体外培养、体外受精的方法研究了硫酸锰对小鼠卵母细胞成熟和受精能力的影响。
Mastering the supply ability of soil nutrient is the basis of scientific fertilization.
土壤测试是了解土壤养分状况，进行科学施肥的基础。
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