1) two-line-method
二系法
1.
On the other hand, the two-line-method uses photoactive caryonic male sterile line as the maternal, fertility restore line with dominant marker gene as the paternal, and needs no breeding of sterility maintainer line.
对三系法和二系法杂交育种进行了比较,结果表明,三系法是一种行之有效的传统育种方法,但它必须要三系(不育系,保持系,恢复系)配套,增加了育种的时间和资金;而二系法选用光敏核不育系的自交不育系做母本,用加显性标记基因的恢复系作父本,省去了繁殖保持系的工作,同时,这种不育系会因光照长度或温度高低(或两者兼有)而在可育与不育之间互相转换,而这些条件都可以人为控制,这既保证了杂种优势的利用,又节省了资金,是一种具有广阔前景的育种方法。
2) seconed cycle method
二环系法
3) secondary coefficient
二次系数法
4) dual-factor design method
二系数设计法
5) two-step culture system
二步法培养系统
1.
In this study,we examined the effects of a two-step culture system,which use the different culture media,on early cleavage and competence of development of bovine zygotes in vitro fertilized.
结果表明,GSH与二步法培养系统结合相对于传统的一步法培养系统更适于牛体外受精卵的体外培养。
6) two syndromes two methods
二证二法
1.
From TCM cognition of acute pulmonary thromboembolism to explore the nature of the "two syndromes two methods"theoretical basis and acute pulmonary thromboembolism treatment,expounded Chinese medicine treatment of acute pulmonary thromboembolism is important.
从中医学对急性肺血栓栓塞症本质进行探讨,从"二证二法"的理论基础及与急性肺血栓栓塞症治疗进行论述,对中医治疗急性肺血栓栓塞症有重要意义。
补充资料：二系
1.指《易．系辞》上下篇。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条