Two factor method 二因子法
Two-factor-at-a-time Tradeoff method 两因素法
two-factor variance analysis method 双因素方差分析法
Two-factor authentication is a popular method being practiced for increased security.
双因素身份验证是增强安全性的流行方法。
For strict slice method the safety factor can be obtained by two equilibrium equations given the orientation or the point of force action between the slices.
对严格条分法，用二个平衡方程，并假设条间力的作用方向或条间力的作用点位置，就能求出安全系数。
Thus we gave a kind of new method for solving the greatest common factor of two-variable polynomials.
利用矩阵的初等变换，给出了两个多项式的最小公倍式、最大公因式及其系数多项式的统一求法。
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