电平变化值之间的最大差maximum difference between level change values【电子】
个体差individual difference
个体差异ndividual Difference
气压梯度pressure difference
商业进销差价difference between commercial purchasing and price【贸易】
【化】 光程差optical path difference
引力势差，重力势差gravitational potential difference
【经】 计时差别timing difference