ผลการค้นหา

fresh air ventilation unit

แปลว่าหน่วยระบายอากาศออกของเครื่องปรับอากาศ หรือทำความเย็น (fresh air หมายถึงอากาศที่เพิ่งจะผ่านเข้าไปสดๆ ร้อนๆ ในฉับพลัน)

Kelly Ball

แปลว่า(Concrete Engineering) A device for determining the consistency of fresh concrete. It is sometimes used as an alternative to the slump test.

fresh air duct

แปลว่าท่อรับอากาศ

Limnology

แปลว่า(Environmental Engineering) The study of freshwater ecosystems.

fresh-air inlet

แปลว่าท่อหรือทางรับอากาศบริสุทธิ์เหนือหลังคาบ้าน

Consistency

แปลว่า(Concrete Engineering) The degree of plasticity of fresh concrete or mortar The normal measure of consistency is slump for concrete and flow for mortar.

Plastic

แปลว่า(Concrete Engineering) A condition of freshly mixed concrete. mortar or cement -paste indicating that it is workable and readily re-moldable, is cohesive, and has an ample content of fines and cement but is not over wet.

Bleeding, Bleed Water

แปลว่า(Concrete Engineering) A form of segregation in which some of the water in a mix tends to rise to the surface of freshly placed concrete. Known also as water gain.

Plasticity

แปลว่า(Concrete Engineering) Property of freshly mixed concrete, cement paste or mortar which determines its ease of molding or resistance to deformation.

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%.

fresh air blower unit

แปลว่าหน่วยพัดอากาศเข้าของเครื่องปรับอากาศ หรือเครื่องทำความเย็น

Retardation

แปลว่า(Concrete Engineering) Delaying the hardening or strength gain of fresh concrete, mortar or grout.