如果倾斜方向相反的话, 它就是正的了.If the dip were in the opposite direction, it would be positive.每个相角不论是正的还是负的, 都是相对于水平轴来说的.Each phase angle, whether positive or negative, is referenced to the horizontal.方差的正的平方根叫做标准差.The positive squ...
I agree with the theorem that the best defence is offence.我同意最好的防御是进攻的理论.His theorem can be translated into simple terms.他的定理可用更简单的术语来解释.By the corollary to Theorem 4.3, the origin is asymptotically stable.根据定理4.3的推论, 原点...