addition time短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 加算时间 The effects of fetal bovine serum FBS addition time, concentration and different culture systems on the developmental potentiality of bovine parthenogenetic embryos were observed. 系统地研究了培养液微滴的大小、培养液体系及血清浓度对山羊孤雌胚胎早期体外发育的影响。 dictall