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ค้นเจอ 102 รายการ

Aging 2

แปลว่า(english) A change in properties that occurs at ambient or moderately elevated temperatures after hot working or a heat treating operation (quench aging in ferrous alloys), or after a cold working operation (strain aging). The change in properties is often, but not always, due to a phase change (precipitation), but does not involve a change in chemical composition. In a metal or alloy, a change in properties that generally occurs slowly at room temperature and more rapidly at higher temperatures.
 ศัพท์ช่างภาษาอังกฤษ – ไทย

Anabolism

แปลว่า(Environmental Engineering) Biosynthesis, the production of new cellular materials from other organic or inorganic chemicals.
 ศัพท์ช่างภาษาอังกฤษ – ไทย

Chemotroph

แปลว่า(Environmental Engineering) Organisms which obtain energy from the metabolism of chemicals, either organic or inorganic.
 ศัพท์ช่างภาษาอังกฤษ – ไทย

Chemoautotrophic

แปลว่า(Environmental Engineering) Organisms which utilize inorganic carbon (carbon dioxide or carbonates) for synthesis and inorganic chemicals for energy. See autotrophic and photoautotrophic.
 ศัพท์ช่างภาษาอังกฤษ – ไทย

Non-evaporable Water

แปลว่า(Concrete Engineering) The water in concrete which is irremovable by oven drying; chemically combined during cement hydration.
 ศัพท์ช่างภาษาอังกฤษ – ไทย

Carbonation

แปลว่า(Concrete Engineering) 1) Reaction between the products of portland cement (soluble calcium hydroxides), water and carbon dioxide to produce insoluble calcium carbonate (efflorescence). 2) Soft white, chalky surface dusting of freshly placed, unhardened concrete caused by carbon dioxide from unvented heaters or gasoline powered equipment in an enclosed space. 3) Carbonated, dense, impermeable to absorption, top layer of the surface of concrete caused by surface reaction to carbon dioxide. This carbonated layer becomes denser and deeper over a period of time. 4) Reaction with carbon dioxide which produces a slight shrinkage in concrete. Improves chemical stability. Concrete masonry units during manufacturing may be deliberately exposed to carbon dioxide after reaching 80% strength to induce carbonation shrinkage to make the units more dimensionally stable. Future drying shrinkage is reduced by as much as 30%.
 ศัพท์ช่างภาษาอังกฤษ – ไทย