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(Environmental Engineering) Organisms which utilize energy from wastes or dead organisms. Decomposers complete the cycle by returning nutrients to the soil or water and carbon dioxide to the air or water.
(Software Engineering) tools that generate source code from a representation of software that is not source code
(Environmental Engineering) The volatile suspended solids concentration in the activated sludge tank.
(Concrete Engineering) A quantity of cement contained in a unit volume of concrete or mortar, ordinarily expressed as pounds, barrels, or bags per cubic yard.
(Concrete Engineering) Adiabatic curing, using sealed containers.
(Concrete Engineering) The pressure exerted by water vapor. Air that contains higher amounts of water vapor exerts a higher vapor pressure than air which has a lower amount of has a higher water vapor pressure In concrete water vapor pressure is calculated by the difference between the vapor pressure of the concrete and the ambient relative humidity and temperature and in contact with the soil. that is calculated by; based upon relative humidity and temperature. The greater the difference between the water vapor and ambient humidity and temperature, in degrees Fahrenheit. the greater the water vapor pressure exerted.
(Environmental Engineering) A form of bonding in which ring compounds share electrons over more than two atoms. The electrons are delocalized. This leads to unusual ring stability.
(Environmental Engineering) A functional group with an oxygen atom double bonded to a carbon atom.
(Environmental Engineering) An adsorption process in which one ion is exchanged for another ion of like charge. There is an equivalence of exchanged charge.
(Environmental Engineering) The recovery and reuse of a product which would otherwise be thrown away.
(Environmental Engineering) The removal of any dissolved or suspended contaminants beyond secondary treatment, often this is the removal of the nutrients nitrogen and/or phosphorus.
(Software Engineering) a point at which some deliverable produced during the software engineering process is put under formal change contro เส้นอ้างอิง ใช้สำหรับการวางผัง หรือการสำรวจ