The annual projection was compiled by the UK Met Office's Hadley Centre, in conjunction with the University of East Anglia.
英国气象局哈德利中心每年都会联合东英格兰大学进行此项气象预测。
The barycentric coordinates of the plane view projection of a coal face are solved with a formula of geometric gravity centre.
利用平面图形几何重心公式计算回采工作面水平投影图形的重心坐标,然后根据影响传播角和开采深度计算下沉盆地中心位置的坐标。
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