inversion area (boundary area between P-and N-regions)
Amount of fill and excavation
Boundary area between Gansu and Sichuan province
boundary area between Hunan and Guizhou Provinces
boundary line between sea and land
Boundary line of target
convergence line of boundary layer
Analysis of line-of-sight
combination form of line and parabola
east extension line of Line 2 of Shenzhen metro
Intersect line of two vertical planes
length of line of action
Line Two of the West-East Natural Gas Transmission
straightness of line of sight
The way of two line ststem
Weight of Line and Angle
base and excavation of building
calculation of area and volume