| Similarity | Rank | |
|---|---|---|
| clean_technology | 0.763 | 51777 |
| green_technology | 0.763 | 39391 |
| energy_technology | 0.732 | 60996 |
| sustainable_energy | 0.690 | 32989 |
| environmental_management | 0.665 | 28442 |
| alternative_energy | 0.665 | 32265 |
| environmental_engineering | 0.664 | 79017 |
| renewable_energy | 0.663 | 4106 |
| renewable_energy_technology | 0.657 | 55947 |
| resource_efficiency | 0.655 | 54134 |
| energy_efficiency | 0.652 | 5081 |
| environmental_protection | 0.640 | 10347 |
| wastewater_treatment | 0.635 | 51114 |
| biotechnology | 0.635 | 9065 |
| nanotechnology | 0.634 | 15466 |
| bioenergy | 0.632 | 43864 |
| waste_management | 0.632 | 16497 |
| advanced_material | 0.629 | 74919 |
| green_energy | 0.628 | 29006 |
| technology_development | 0.627 | 27235 |
| green_economy | 0.626 | 36657 |
| innovative_technology | 0.624 | 23643 |
| material_science | 0.621 | 27195 |
| renewable_technology | 0.620 | 94854 |
| renewable_energy_source | 0.620 | 24016 |