One tweak would be to shift the start of the seven-day window for filling a prescription filled to the day of the negative pregnancy test.

一个好办法就是把从开处方的七天内开始改为直到妊娠测试阴性。

youdao

For rectangular window FFT interpolation algorithm, the negative frequency components of harmonic components have a greater impact on the fundamental calculation error.

采用加矩形窗fft插值算法，谐波的负频分量对谐波计算的误差影响较大。

youdao

The result shows that the edged sampling mirror and the edged vacuum window can be treated as a pair of prisms, which generates negative group velocity dispersion.

分析结果表明，带楔角的取样反射镜与后续光路中使用楔形真空窗口构成了一对棱镜，产生负的群速度色散。

youdao

So, the next couple of items on my list were from Bastiat: the petition of the candle makers, the negative railroad, and the broken window fallacy, which led in to his discussion of the seen versus the unseen.

FORBES: Looking for Counterfactuals: The Seen versus the Unseen