| Acronyms | Constituent Words |
| FTA | Fault Tree Analysis |
| WBS-RBS | Work Breakdown Structure and Risk Decomposition Structure |
| T-S | Top-Second |
| TBM | Tunnel Boring Machine |
| ATS | Automatic Train Supervision |
| AHP | Analytic Hierarchy Process |
| XRD | X-Ray Diffraction |
| SEM | Scanning Electron Microscope |
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