The quadratic variation and mixed integrals of the martingales with orthogonal increments are studied. The theorem for the existence of quadratic variation is proved.
研究了二参数正交增量鞅的平方变差和混合积分，证明了平方变差的存在定理。
This paper presents a method for evaluating the flow about an arbitrary three-dimensional body using the submerged patches of triangular elements with quadratic variation of source strength.
本文利用内潜奇点片的概念，提出了二次分布源强的三角形单元，进行绕任意三维物体的势流的计算，并得到了计算所需要的一系列积分公式。
The temperature variation in the direction of thickness is assumed to be linear or quadratic.
此种单元可以假设温度沿壳体厚度方向为线性变化或二次函数变化。
The temperature variation in the direction of thickness is assumed to be linear or quadratic.
此种单元可以假设温度沿壳体厚度方向为线性变化或二次函数变化。
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