The effects of fetal bovine serum (FBS) additiontime, concentration and different culture systems on the developmental potentiality of bovine parthenogenetic embryos were observed.
试验研究了培养液中血清的添加时间和添加浓度及不同培养体系对黄牛孤雌胚胎体外发育潜力的影响。
2
In addition, it is necessary to apply for graduation when you're near the time that you will be completing your graduation requirements.
此外，在你即将完成毕业要求的时候，有必要去申请毕业。
3
There's just one thing you should try to keep at least some time for, in addition to your writing—and that's reading.