电平变化值之间的最大差maximum difference between level change values【电子】
个体差individual difference
气压梯度pressure difference
【化】 光程差optical path difference
引力势差，重力势差gravitational potential difference
剪刀差price scissors【经】;scissors difference【经】
和差系统sum-and-difference system【计】
【电学】频率不同difference in frequency