鲨鱼有三种繁殖方式,它们的繁殖方式因物种而异,分别是卵胎生、胎生和卵胎生。
Sharks display three ways to bear their young, varying by species, oviparity, viviparity and ovoviviparity.
根据豫西脂尾羊排卵及胚胎生长发育特点,就如何提高其繁殖率问题提出了具体建议和措施。
According to the character of the ovulation and embryo development in Yuxi Short Thick Dock sheep, several specific proposals and measures for increasing the sheep fertility have been put forward.
根据豫西脂尾羊排卵及胚胎生长发育特点,就如何提高其繁殖率问题提出了具体建议和措施。
According to the character of the ovulation and embryo development in Yuxi Short Thick Dock sheep, several specific proposals and measures for increasing the sheep fertility have been put forward.
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