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- 二次R-稳定性 Quadratic R- Stability
- 二 two
- 二次 adratic quadrate
- 二次稳定性 quadratic stability
- 二次开发 secondary development
- 二次曲线 conic
- 二次方程 quadratic equation
- 二次创业 start a new undertaking
- 二次回路 secondary thermal system
- 二次鲁棒稳定性 Quadratic robust 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
- 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
- 二次多项式 quadratic polynomial
- 二次项 quadratic term
