The population mean is often written "x-bar." If you have a sample with n observations, it's the summation i = 1 to n of xi/n--that's the average.
人口均值经常写成“x-条形柱”，如果你有一个样本有n个观测者，是从i=1到n和的xi/n，这是平均值。
I use the scroll bar to figure out the scroll position so that I can paint correctly drop location for drag-n-drop operation.
我使用滚动条找出滚动位置，让我能正确绘制下降的阻力位置，氮拖放操作。
This paper presents a new, simple method for the complete shaking moment balancing of planar n-bar linkages caused by inertia but excluding external loads.
本文提出一种能完全平衡平面连杆机构摆动力矩的简便方法。
This paper presents a new, simple method for the complete shaking moment balancing of planar n-bar linkages caused by inertia but excluding external loads.
本文提出一种能完全平衡平面连杆机构摆动力矩的简便方法。
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