水稻颖花分化分为三个阶段，分别可用积温的直线函数、负指数函数和直线进行函数模拟。
The third stages are the line, the negative exponential and line function of the GDD.
本文给出了一个计算本质非负三角阵的指数函数的高精度算法。
In this paper, we present an algorithm to accurately compute the exponential of a triangular essentially nonnegative matrix.
本文给出了一个计算本质非负三角阵的指数函数的高精度算法。
In this paper, we present an algorithm to accurately compute the exponential of a triangular essentially nonnegative matrix.
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