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Pumice
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- Light-colored, frothy volcanic rock, usually of dacite or rhyolite composition, formed by the expansion of gas in erupting lava. commonly seen as lumps or fragments of pea-size and larger, but can also occur abundantly as ash-sized particles.
- Lava having a highly porous, loose, spongy, or cellular structure; of relatively high silica content; used in powdered form as an abrasive in polishing, etc.
- Пемза pump насос
- (a) [soils] rock fragments > 2 mm in diameter (i.e., retained upon a 2 mm sieve), or coherent rock layers (pumice flow), made of light-colored, vesicular, glassy rock commonly having the composition of rhyolite. the material commonly has a specific gravity of < 1.0 and is thereby sufficiently buoyant to float on part 629 - glossary 629-62 (430-vi-nssh, 2008) water. sw; pumice-like fragments < 2 mm in size are called pumiceous ash. st; compare - scoria, tephra; (b) [geology] same as (a) but does not include any size restrictions. sw.
- Light-coloured glassy rock formed from acid lava. contains abundant
- Porous and lightweight, pumice physically lifts away dead skin cells from the topmost layer of skin for soft, smooth skin. it`s even known to help remove calluses and rough patches. you`ll find it in many body care exfoliators, like scrubs and body washes. find it in our buff it out aha exfoliating body scrub.
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Пемза, русский
- Легкая вулканическая пористая порода светло-серого цвета, похожая на застывшую пену. предел прочности пемзы — 0,2-1,4 мпа, средняя плотность — 300-600 кг/м3, истинная плотность 2,5 г/см3.
- Легкая вулканическая пористая порода светло-серого цвета, похожая на застывшую пену. предел прочности пемзы - 0,2-1,4 мпа, средняя плотность - 300-600 кг/м3, истинная плотность 2,5 г/см3.
- Горная порода легкая (не тонет в воде), белая или серая, очень пористая. происхождение — вулканическое. в виде отдельных обломков и зерен (пемзовый песок) может разноситься течениями на значительные расстояния от очагов вулканических извержений и формировать вместе с обломками других пород вулкано-генно-осадочные отложения.
- , пористая, легкая (не тонет в воде) вулканическая горная порода, образующаяся в результате вспучивания и быстрого застывания кислой лавы. пористость пемзы св. 60%, объемная масса (в куске) 2000-2300 кг/м3, твердость ок. 5-6,5. применяют как абразивный материал, заполнитель бетонов, добавку к цементу.
- Легкая вулканическая пористая порода светло-серого цвета, похожая на застывшую пену. предел прочности пемзы
- Дисперсная система, в которой газ диспергирован в твердом веществе.
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Composition, английский
- Состав
- A photographic process in which patterns on two separate substrates are
- The arrangement of subject matter, graphic elements, tones, and light in a scene. can be harmonious or discordant, depending on the photographer, his or her mood, and the subject at hand. there are no set rules, just suggestions; successful compositions are ones that best express particular feelings about the subject or scene.
- N словосложение; образование (ант. decomposition) polysynthetic ~ полисинтетическое объедине- ние
- A composition is a function or relationship that can be constructed from other functions or relationships. for example, the function grandparent(x) is a recursive composition of the parent() function, grandparent(x) = parent(parent(x)). compositional rule of inference (cri) see: fuzzy associative memory. computer-aided design (cad) the process of using a computer to aid in the design and (cadcam) manufacture of objects or systems. the complexity of these systems range from basic drawing systems through systems that can warn you about basic dimensional constraints to systems that understand and implement constraints based on other properties of the objects in the system. it is used for the design of mechanical, electronic, construction, and other systems. computer-aided education the use of computers to aid in the education of personnel. computer-aided instruction, intelligent see: intelligent computer-aided instruction. computer integrated manufacturing (cim) computer integrated manufacturing refers to the integration of computer sensors and controllers into a manufacturing process. this includes three types of functions. first the computers provide programmable and flexible automation of the manufacturing process. this leads to the ability to optimize the process flexibly to react to current variations in the process. finally, the various sensors and controllers can be integrated into a comprehensive system.
- A whole-part relationship in which the life cycle of the part object is dependent on the life cycle of the whole object.
- An activity flow created from multiple actions. composition is core to the human workflow services system.
- An export format that flattens a group of images defined in a deep zoom composer project into a single high-resolution image that is generated at export.
- One or more images that are positioned, arranged, ordered, and proportionally resized according to a user’s specifications within a deep zoom composer project.
- Voluntary arrangement to restructure a firm`s debt, under which payment is reduced.
Relatively, английский
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Lapilli, английский
- Literally, "little stones;" round to angular rock fragments measuring 1/10 inch to 2-1/2 inches in diameter, which may be ejected in either a solid or molten state.
- Non or slightly vesicular pyroclastics, 2.0 to 76 mm in at least one dimension, with an apparent specific gravity of 2.0 or more. compare - ash [volcanic], block [volcanic], cinders, tephra. kst
- Pyroclastic rock material of gravel size (i.e. 2 to 60mm).
Pyroclastic flow, английский
- Lateral flowage of a turbulent mixture of hot gases (≈400°c) and unsorted pyroclastic material (volcanic fragments, crystals, ash, pumice, and glass shards) that can move at high speed (100 miles an hour or more). also known as a "glowing avalanche" or "nueé ardente."
- A fast density current of pyroclastic material, usually very hot, composed of a mixture of gasses and a variety of pyroclastic particles (ash, pumice, scoria, lava fragments, etc.); produced by the explosive disintegration of viscous lava in a volcanic crater or by the explosive emission of gas-charged ash from a fissure and which tends to follow topographic lows (e.g. valleys) as it moves; used in a more general sense than ash flow. compare -pyroclastic surge, ash flow, nuee ardente, lahar. sw, sn, gg
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