Based on the photoconductive method the Energy Gap Measuring Device for Semiconductor Material-Type DB-1 has been developed.

根据光电导方法，研制了DB - 1型半导体材料禁带宽度测试装置。

youdao

That's the biggest gap since they started measuring it, in 1990.

BBC: The UK productivity puzzle (cont'd)

Everything begins with measuring and understanding the gap between what the experience is and what it should be.

FORBES: Brian Solis: The Future of Business is Shared Experiences

Measuring at purchasing-power parity makes the gap in GDP and living standards look narrower.

ECONOMIST: Economic folly