本文详细研究了其窗函数的选取准则，给出了在最佳频率分辨率意义上的最佳窗函数。
The criteria of window functions are discussed in detail, and the optimal length of window is obtained by means of optimal frequency resolutions.
高科技三层玻璃窗，内部空腔填充惰性气体，可以保证最佳的阳光投射量和室内保温。
High-tech windows with three panes of glass filled with inert gas guarantee optimum sunshine throughput and insulation.
分别计算不同尺寸及开启方式的窗结构U值，作为选择最佳投入产出比率的理想依据。
Respectively calculate different sizes and U-value of window's structure of different opening style to be an ideal basis for choosing the best input-output ratio.
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