| screening (The reduction of the electric field about a nucleus by the space charge of the surrounding electrons) |
ستر - وضع ساتر |
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| sea (1. In general, the marine section of the globe as opposed to that of the land. 2. The name given to a body of salt water smaller than an ocean and generally in proximity to a continent) |
بحر |
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| sea bed (The bottom of the ocean. Also known as sea floor; sea bottom. The ocean floor is defined as the near-horizontal surface of the ocean basin) |
قاع البحر |
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| sea bed exploitation (Marine mineral resources extend far beyond those presently exploited; minerals are derived from two separate types of marine sources: from sedimentary deposits underlying the continental shelves and from inshore deposits on the surface of the continental shelves. By far the most valuable of the mineral resources exploited from marine environments is petroleum. Offshore placer deposits on the surface of the continental shelves yield gold, platinum, and tin. On the floors of the world's oceans manganese nodules are found as a result of pelagic sedimentation or precipitation; they are small, irregular, black to brown, friable, laminated concretionary masses consisting primarily of manganese salts and manganese-oxide minerals) |
استغلال قاع البحر |
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| sea bed mining (The activity or processes involving the extraction of mineral deposits from the surface, or below the surface, of the ocean floor) |
التعدين في قاع البحر |
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| 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) |
الدورات المائية البحرية |
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| sea grass bed (Seaweeds communities formed by green, brown and red macroscopic algae and by sea phanerogams such as Posidonia oceanica and Zostera noltii, etc.) |
القاع العشبي للبحر |
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| sea level (The level of the surface of the ocean; especially, the mean level halfway between high and low tide, used as a standard in reckoning land elevation or sea depths) |
مستوى سطح البحر |
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| sea level rise (Sea-level rises are a possible consequence of global warming. As the amount of free water in the oceans increases, and as the water becomes warmer, global warming will increase. In addition, according to theory, the heating at the poles may reduce the amount of water trapped in glaciers and ice caps) |
ارتفاع مستوى سطح البحر |
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| sea outfall (The point, location or structure where effluent discharges into a body of marine waters such as a sea, ocean, etc.) |
مصب بحري |
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| sea resource (Marine resources include food, energy and minerals) |
مصدر بحري |
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| sea water (Aqueous solution of salts in more or less constant ratio, whose composition depends on several factors among which predominate living organisms, detrital sedimentation and the related chemical reactions. Sea-water accounts for more than 98% of the mass of the hydrosphere and covers just over 70% of the globe. Because of the composition and stability of the oceans, and the way they are controlled, they are of great importance to the climate, and great attention has been given to studying the effects of pollution. Man's activities are believed to be accelerating the change in the composition of sea-water) |
مياه البحر |
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| sea water desalination (Removing salt from ocean or brackish water) |
تحلية ماء البحر - إزالة ملوحة ماء البحر |
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| sea water protection |
حماية ماء البحر |
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| sea wave (A moving ridge or swell of water occurring close to the surface of the sea, characterized by oscillating and rising and falling movements, often as a result of the frictional drag of the wind) |
موج البحر |
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| seal (technical, Any device or system that creates a nonleaking union between two mechanical or process-system elements) |
الختم |
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| sealing (Luting, making watertight, waterproofing) |
خَتم - الإغلاق بخاتم |
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| seashore (The zone of unconsolidated material that extends landward from the low water-line to where there is marked change in material or physiographic form or to the line of permanent vegetation) |
شاطئ البحر |
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| seaside footpath (A route or track running along the coast) |
ممشى ساحلي |
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| seaside resort (A place near the sea where people spend their holidays and enjoy themselves) |
منتجع شاطئي |
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