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| Terms for subject Environment (6972 entries) |
| hüdroautomaatika | fluidics (A control technology that employs fluid dynamic phenomena to perform sensing, control, information, processing, and actuation functions without the use of moving mechanical parts) | |
| hüdrobioloogia | hydrobiology (Study of organisms living in water) | |
| hüdrobiont | aquatic organism (Organisms which live in water) | |
| hüdroelektrienergia | hydroelectric energy (The free renewable source of energy provided by falling water that drives the turbines. Hydropower is the most important of the regenerable energy sources because of its highest efficiency at the energy conversion. There are two types of hydroelectric power plants: 1. run-of-river power plants for the use of affluent water; 2. storage power plants (power stations with reservoir) where the influx can be regulated with the help of a reservoir. Mostly greater differences in altitudes are being used, like mountain creeks. Power stations with reservoirs are generally marked by barrages with earth fill dam or concrete dams. Though hydropower generally can be called environmentally acceptable, there exist also some problems: 1. change of groundwater level and fill up of the river bed with rubble. 2. Risk of dam breaks. 3. Great demand for land space for the reservoir. 4. Diminution, but partly also increase of value of recreation areas. As the hydropowers of the world are limited,the world energy demand however is rising, finally the share of hydropower will decrease) | |
| hüdroelektrijaam | hydroelectric power plant (Power station which operates with the free renewable source of energy provided by falling water) | |
| hüdrofüüt | aquatic plant (Plants adapted for a partially or completely submerged life) | |
| hüdrogeoloogia | hydrogeology (The science dealing with the occurrence of surface and ground water, its utilization, and its functions in modifying the earth, primarily by erosion and deposition) | |
| hüdrograafia | hydrography (Science which deals with the measurement and description of the physical features of the oceans, lakes, rivers, and their adjoining coastal areas, with particular reference to their control and utilization) | |
| hüdrograafiline võrk | hydrographic network (The configuration or arrangement in plan view of the natural stream courses in an area. It is related to local geologic and geomorphologic features and history. Synonym: drainage pattern) | |
| hüdroloogia | hydrology (The science that treats the occurrence, circulation, distribution, and properties of the waters of the earth, and their reaction with the environment) | |
| hüdroloogia | water science (The science that treats the occurrence, circulation, distribution, and properties of the waters of the earth, and their reaction with the environment) | |
| hüdrolüüs | hydrolysis (1. Decomposition or alteration of a chemical substance by water. 2. In aqueous solutions of electrolytes, the reactions of cations with water to produce a weak base or of anions to produce a weak acid) | |
| hüdromeetria | hydrometry (The science and technology of measuring specific gravities, particularly of liquids) | |
| hüdromelioratsioon | agricultural hydraulics (Science and technology involved in the management of water resources, in the control of erosion and in the removal of unwanted water) | |
| hüdrometeoroloogia | hydrometeorology (That part of meteorology of direct concern to hydrologic problems, particularly to flood control, hydroelectric power, irrigation, and similar fields of engineering and water resource) | |
| hüdropoonika | hydroculture (Growing plants without soil but in sand or vermiculite or other granular material, using a liquid solution of nutrients to feed them) | |
| hüdrosfäär | hydrosphere (The waters of the Earth, as distinguished from the rocks (lithosphere), living things (biosphere), and the air (atmosphere). Includes the waters of the ocean; rivers, lakes, and other bodies of surface water in liquid form on the continents; snow, ice, and glaciers; and liquid water, ice, and water vapour in both the unsaturated and saturated zones below the land surface. Included by some, but excluded by others, is water in the atmosphere , which includes water vapour, clouds, and all forms of precipitation while still in the atmosphere) | |
| hügieen | hygiene (The science that deals with the principles and practices of good health) | |
| hulgavirgestus | mass recreation (A pastime, diversion, exercise or other means of enjoyment and relaxation that is shared with or performed by a large number of people) | |
| hulgikaubandus | distributive trade (Distribution of material goods to consumers, through retailing and wholesaling) |