The base region is always very much narrower than the emitter or collector regions .

基极总是比发射极和集电极薄得多。

youdao

The tax base is narrower in emerging markets and revenues more volatile.

税基相对更为狭窄而财政收入的波幅更大。

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Following this argument, India's growth rate is higher because the base on which the rate is calculated is narrower.

BBC: Can India's economy overtake China?

The Swedish team, with help from researchers at the University of Copenhagen, sequenced tens of thousands of base pairs from across the genome of the farm woman, going beyond earlier studies that looked at narrower slices, such as mitochondrial DNA inherited through the female line.

WSJ: Migrations Spurred Agriculture Spread, Studies Indicate