duration
| frequency method
| duration abbr. | |
| gen. | 期间; 持续期间; 持续 |
| comp., MS | 期間 |
| hydroel.st. од. | 持续时间 |
| IMF. | 加权平均期限; 久期 |
| met. | 时间; 延续时间; 期限 |
| frequency method abbr. | |
| IT | 频率法 |
noun | noun | to phrases
|
duration : 1520 phrases in 103 subjects |
| Advertising | 2 |
| Agriculture | 80 |
| Air defense | 10 |
| Animal husbandry | 35 |
| Architecture | 2 |
| Artificial intelligence | 7 |
| Astronautics | 3 |
| Athletics | 2 |
| Automobiles | 59 |
| Aviation | 33 |
| Bridge construction | 18 |
| Business | 29 |
| Cartography | 1 |
| Chemistry | 4 |
| China | 7 |
| Commerce | 6 |
| Communications | 2 |
| Construction | 7 |
| Consulting | 1 |
| Corporate governance | 7 |
| Cryosphere | 1 |
| Demography | 18 |
| Desert science | 22 |
| Drilling | 2 |
| Earth sciences | 17 |
| Ecology | 9 |
| Economics | 16 |
| Electric machinery | 11 |
| Electricity | 10 |
| Electricity generation | 1 |
| Electronic commerce | 1 |
| Electronics | 117 |
| Energy industry | 2 |
| Engineering geology | 20 |
| Environment | 1 |
| Explosives and Explosive Ordnance Disposal | 11 |
| Fencing | 3 |
| Finances | 7 |
| Football | 2 |
| Forestry | 1 |
| General | 16 |
| Genetics | 2 |
| Geophysics | 10 |
| Geotechnics | 1 |
| Heavy equipment vehicles | 1 |
| Horticulture | 1 |
| Hydroelectric power stations | 85 |
| Hydrology | 11 |
| Information technology | 13 |
| International trade | 10 |
| Judo | 2 |
| Life sciences | 1 |
| Management | 2 |
| Mathematics | 2 |
| Mechanic engineering | 1 |
| Metallurgy | 34 |
| Meteorology | 1 |
| Military | 1 |
| Model sports | 2 |
| Multimedia | 1 |
| Nautical | 1 |
| Nuclear and fusion power | 1 |
| Nuclear physics | 2 |
| Nursing | 1 |
| Oceanography & oceanology | 13 |
| Oil / petroleum | 28 |
| Otorhinolaryngology | 6 |
| Pharmacology | 1 |
| Physics | 4 |
| Physiology | 3 |
| Planning | 1 |
| Plastics | 3 |
| Polygraphy | 3 |
| Polymers | 1 |
| Power electronics | 2 |
| Project management | 17 |
| Psychology | 2 |
| Public security | 6 |
| Radio | 4 |
| Rail transport | 12 |
| Refrigeration | 4 |
| Reliability | 2 |
| Reproductive biology | 2 |
| Road construction | 1 |
| Rugby football | 3 |
| Scientific | 5 |
| Scuba diving | 2 |
| Securities | 35 |
| Shipbuilding | 6 |
| Skydiving | 2 |
| Space | 70 |
| Sports | 14 |
| Submarines | 1 |
| Swimming | 1 |
| Taekwondo | 1 |
| Technology | 388 |
| Telecommunications | 31 |
| Television | 2 |
| Textile industry | 17 |
| Ultrasound | 1 |
| United States | 1 |
| Water resources | 3 |
| Wind Energy | 33 |