Engineering
Axle Load
59%
Ballasted Track
19%
Base Layer
10%
Boundary Condition
29%
Construction Phase
10%
Construction Types
19%
Damage Mechanism
59%
Deterioration Model
59%
Direct Cost
19%
Emitter Coupled Logic Circuits
29%
Greenhouse Gas
59%
Growth Function
19%
Hydrogen Fuel Cell Technology
19%
Lifecycle
59%
Load Level
19%
Material Production
10%
Production Engineering
10%
Rail Surface
40%
Railway
100%
Review Paper
19%
Rolling Contact Fatigue
19%
Rolling Stock
40%
Service Life
10%
Slab Track
59%
Soil Condition
29%
Soil Reinforcement
19%
Steel Grade
19%
Subsoil Condition
59%
Surface Fatigue
59%
Test Result
19%
Test Rig
19%
Tunnel
10%
Tunnel Construction
10%
Material Science
Carbon Dioxide
59%
Diesel Fuel
59%
Gas Emission
59%
Greenhouse Gas
59%
Hydrogen Fuels
59%
Earth and Planetary Sciences
Circular Economy
19%
Emission Factor
19%
Energy Requirement
29%
Environmental Cost
59%
Environmental Indicator
19%
Global Warming Potential
19%
Hydrogen Fuels
29%
Life Cycle Assessment
19%
