The characteristics of meanreturn period curves of intensity are studied.
研究了烈度的平均重现周期曲线的特征。
2
Markowitz formalized a notion of meanreturn and covariance's for common stocks which allowed him to quantify the concept of "diversification" in a market.
马克维茨将回归概念形式化并且协方差的普通股让他可以在市场中量化“多元化”的概念。
3
This could mean a return to smaller fields, with crops planted in grids rather than rows and fruit trees pruned into two-dimensional shapes to make harvesting easier.