ผลการค้นหา

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%.

gasoline needle valve

แปลว่าลิ้นนมหนูฉีดน้ำมันของคาบูเรเตอร์

Abrasion 1

แปลว่า(english) The displacement and/or detachment of metallic particles from a surface as a consequence of being exposed to flowing solids, fluids or gases. The process of rubbing, grinding, or wearing away by friction.

gasket

แปลว่าประเก็น (กันซึม)

calcium cabide

แปลว่า(เคมี ) CaC2. ได้จากให้ความร้อนกับสารผสมของ lime กับ coke ในเตาหลอมไฟฟ้า ใช้ทำ Acetylene gas โดยการให้เกิดปฏิกิริยากับน้ำ

hot ammonia gas

แปลว่าไอจากน้ำยาแอมโมเนียร้อน, ไอน้ำยาร้อนของเครื่องทำความเย็น

megascopic

แปลว่าซึ่งสามารถจะมองเห็นได้ด้วยตาเปล่า

Abrasive Wear

แปลว่า(english) The displacement and / or detachment of metallic particles from a surface as a consequence of being exposed to flowing fluids or gases.

natural gas

แปลว่า(เคมี) แก๊สที่เกิดขึ้นเองตามธรรมชาติ โดยเฉพาะในบริเวณที่เป็นแหล่งน้ำมัน จะมีแก๊สธรรมชาติอย่างมากมาย เป็นแก๊สที่นำมาเป็นเชื้อเพลิงได้

AAC - Autoclaved Aerated Concrete

แปลว่า(Concrete Engineering) Exceptionally lightweight precast concrete with high thermal qualities and fire resistence. Suitable for cutting with ordinary hand tools. Mix design is composed of portland cement, sand or siliceous material, lime, gypsum, finely powdered aluminum, and water. Initial mix is a combination of portland cement, sand, lime and gypsum to produce a slurry. Finely powdered aluminum mixed into a paste is added prior to placement into large, rail-like forms. The finely powdered aluminum reacts with the alkaline components of the cement and lime to produce hydrogen gas, which increases the volume approximately five times producing a uniformly, dispersed cellular structure. Units are cut to required shape. Units are placed in an autoclave, an enclosed pressurized chamber, and steam cured at 3500 F. Approximately 80% of the ultimate volume consists of air voids.

BACK-UP RING

แปลว่า(english) A fabric or plastic device that is used with an o-ring or other gasket to prevent extrusion of the o-ring or gasket into an adjacent space or crevice

Denitrification

แปลว่า(Environmental Engineering) The anoxic biological conversion of nitrate to nitrogen gas. It occurs naturally in surface waters low in oxygen, and it can be engineered in wastewater treatment systems.