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surface trench

См. также в других словарях:

  • Trench warfare — is a form of warfare where both combatants have fortified positions and fighting lines are static. Trench warfare arose when a revolution in firepower was not matched by similar advances in mobility. The result was a slow and grueling form of… …   Wikipedia

  • Surface mining — is a type of mining in which soil and rock overlying the mineral deposit are removed. It is the opposite of underground mining, in which the overlying rock is left in place, and the mineral removed through shafts or tunnels. Surface mining is… …   Wikipedia

  • trench — [trentʃ] n [Date: 1300 1400; : Old French; Origin: trenche act of cutting , from trenchier to cut , probably from Latin truncare; TRUNCATE] 1.) a long narrow hole dug into the surface of the ground ▪ Workers dug a trench for gas lines. 2.) …   Dictionary of contemporary English

  • Trench drain — A trench drain (also channel drain, line drain, slot drain, linear drain or strip drain) is a specific type of floor drain containing a dominant through or channel shaped body. It is used for the rapid evacuation of surface water or for the… …   Wikipedia

  • Trench effect — The trench effect is a combination of two well understood but separate ideas: the Coandă effect from fluid dynamics and the flashover concept from fire dynamics.The Coandă effect is the tendency of a fast moving stream of air to deflect towards… …   Wikipedia

  • trench foot — noun resembling frostbite but without freezing; resulting from exposure to cold and wet • Syn: ↑immersion foot • Hypernyms: ↑frostbite, ↑cryopathy * * * noun Etymology: so called from its prevalence among soldiers serving in the trenches during… …   Useful english dictionary

  • trench — noun (C) 1 a long narrow hole dug into the surface of the ground: Plant your roses in a trench filled with manure. 2 a deep trench dug in the ground as a protection for soldiers: the trenches of World War I 3 technical a long narrow valley in the …   Longman dictionary of contemporary English

  • trench-plow — ˈ ̷ ̷ˌ ̷ ̷ verb Etymology: trench + plow, v. intransitive verb : to bring lower soil to the surface by plowing a furrow a second time with a plow set much deeper transitive verb : to plow (a field) to double depth …   Useful english dictionary

  • trench foot — noun a painful condition of the feet caused by long immersion in cold water or mud and marked by blackening and death of surface tissue …   English new terms dictionary

  • Oceanic trench — Oceanic crust is formed at an oceanic ridge, while the lithosphere is subducted back into the asthenosphere at trenches. The oceanic trenches are hemispheric scale long but narrow topographic depressions of the sea floor. They are also the… …   Wikipedia

  • Outer trench swell — The outer trench swell, outer trench high, or outer rise is a subtle ridge on the seafloor near an oceanic trench, where a descending plate begins to flex and fault in preparation for its descent into the mantle at a subduction zone. The… …   Wikipedia

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