| Subject | English | Romanian |
| construct. | air-circulation heating system | încălzire cu aer recirculat |
| environ. | atmospheric circulation The general movement and circulation of air, which transfers energy between different levels of the atmosphere. The mechanisms of circulation are very complicated. They involve the transfer of energy between the oceans and the atmosphere, the land and the atmosphere, as well as the different levels of the atmosphere | circulaţie atmosferică |
| vet.med. | blood circulation | circulația sîngelui |
| immigr. | brain circulation | circulaţia creierelor |
| construct. | circulation closed piping | contur de circulație |
| construct. | circulation diagram | schemă de circulație |
| construct. | circulation pipe | conductă de circulație |
| construct. | circulation pipework | rețea inelară de distribuția apei |
| construct. | circulation pump | pompă de circulație |
| construct. | circulation rate | factor de circulație |
| econ. | commodity circulation | schimb de mărfuri |
| econ. | commodity circulation | circulația mărfurilor |
| gen. | Convention relating to Stops on Bearer Securities in International Circulation | Convenția europeană privind stoparea barierelor de securitate în circulația internațională |
| commer., polit. | declaration of free circulation | declarație de liberă circulație |
| construct. | forced air circulation | circulația forțată a aerului |
| fin. | free circulation | liberă circulație |
| fin. | free circulation | punere în liberă circulație |
| econ. | free circulation | circulație vamală liberă |
| fin., polit. | goods put into free circulation | mărfuri puse în liberă circulație |
| fin., polit. | goods released for free circulation | mărfuri puse în liberă circulație |
| econ. | limited circulation | circulație limitată a informației |
| agric. | medium of circulation | mijloace de circulație (funcția banilor) |
| construct. | natural air circulation | circulația naturală a aerului |
| construct. | natural water circulation | circulația naturală a apei |
| environ. | ocean circulation Water current flow in a closed circular pattern within an ocean | circulaţia oceanică |
| fin. | putting into free circulation | punere în liberă circulație |
| fin. | putting into free circulation | liberă circulație |
| fin., polit. | release for free circulation | punere în liberă circulație |
| environ. | sea circulation Large-scale horizontal water motion within an ocean. The way energy from the sun, stored in the sea, is transported around the world. The currents explain, for example, why the UK has ice-free ports in winter, while St. Petersburg, at the same latitude as the Shetland Islands, needs ice breakers. Evidence is growing that the world's ocean circulation was very different during the last ice age and has changed several times in the distant past, with dramatic effects on climate. The oceans are vital as storehouses, as they absorb more than half the sun's heat reaching the earth. This heat, which is primarily absorbed near the equator is carried around the world and released elsewhere, creating currents which last up to 1.000 years. As the Earth rotates and the wind acts upon the surface, currents carry warm tropical water to the cooler parts of the world. The strength and direction of the currents are affected by landmasses, bottlenecks through narrow straits, and even the shape of the sea-bed. When the warm water reaches polar regions its heat evaporates into the atmosphere, reducing its temperature and increasing its density. When sea-water freezes it leaves salt behind in the unfrozen water and this cold water sinks into the ocean and begins to flow back to the tropics. Eventually it is heated and begins the cycle all over again | trafic maritim |
| construct. | stairs circulation lane | bandă de circulație pe scară |
| hydr. | transverse circulation | circulație transversală |
| agric. | water circulation | circuitul apei |