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- 二次D-稳定quadratic D-stability
- 采用氮、磷二因素五水平二次D-饱和最优设计,于2002年在陕西天士力商洛药用植物有限公司丹参基地进行了施肥对丹参产量及有效成分含量的影响田间试验。The field fertilization experiment, which was conducted in the Danshen Base of Shaanxi Tasly medicine, Plant limited Company in Shangzhu city, Shaanxi province to get the optimum rate of N, P and to known the effect of N, P fertilizer on active ingredient of danshen.
- 二two
- 二次adratic quadrate
- 二次开发secondary development
- 二次稳定quadratic stability
- 二次方程quadratic equation
- 二次曲线conic
- 二次创业start a new undertaking
- 二次回路secondary thermal system
- 广义二次稳定generalized quadratic stability
- 二次侧secondaly side
- 二次电池storage battery
- 尽管他一年中到南利兹选区访问仅一到二次，但那儿的选举区一直为他保留着。His constituency at South Leeds was being kept warm for him although he was able to visit once or twice a year.
- 二次方程式quadratic
- 二次曲面conicoid
- 第一类Nédélec二次棱有限元first family of Nédélec quadratic edge finite element equations
- 二次能源secondary energy sources
- 美国家庭主妇可能一星期只购物一、二次。The American housewife probably goes shopping only once or twice a week.
- 二次谐波secondary harmonic
