，部分亚椭圆型的- linear theory
- linear time algorithm
- linear time-invariant system
- linear time-varying system
- linear topological property
- linear topological space
- linear topology
- linear transformation
- linear transformation group
- linear transformation kernel
- linear transport equation
- linear trend
- linear type
- linear unbiased estimate
- linear unbiased estimator
- linear variation
- linear variety
- linear vector space
- linear vibration theory
- linear wave
- linear weak topology
- linear weighted moment
- linear weight sum method
- line at infinity
- line balance