杜氏变换是一种将信号从时域到门宽域的变换，用信号的宽谱密度来描述信号的特征。
The Du-conversion is one that converse the signal from time domain to gate-width domain and uses the wide spectrum density of the signal to show its characteristics.
也就是这开门的一瞬间，所有从事研究的、写论文的、或只是想多学点什么东西的人们都想从不列颠这道不宽的门挤进去看个究竟。
Suddenly, everyone doing research, or writing a paper, or just plain interested in learning more about something tried to force themselves through Britannica’s too narrow doorway.
他到内殿量墙柱，各厚二肘。 门口宽六肘，门两旁各宽七肘。
Then went he inward, and measured the post of the door, two cubits; and the door, six cubits; and the breadth of the door, seven cubits.
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