1000 km long green corridor
1000 m long great diameter borehole
2+1 dimensional dispersive long wave system
2+1-dimensional dispersive long wave equation
2+1-dimensional dispersive long wave equations
2+1-dimensions nonlinear dispersive long wave equa
56 meters long box beam
a face as long as a fiddle
A long bout of exercise
a long distance monitoring and controlling
a long low-pressure pulse bag filter