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ค้นเจอ 367 รายการ

Back-up Roll

(english) 1) Roll used as a support roll mainly for plater rolls. 2) Two rolls, one on top and one on bottom of the two work rolls which apply pressure and reduce the flexing of the work rolls.

Box Annealing

(english) Annealing a metal or alloy in a sealed container under conditions that minimize oxidation. In box annealing a ferrous alloy, the charge is usually heated slowly to a temperature below the transformation range, but sometimes above or within it, and is then cooled slowly; this process is also called close annealing or pot annealing.

Shock load

(Environmental Engineering) Influent wastewater entering the plant which has an unusually high organic content and/or high flow rate.

Dump

(Environmental Engineering) An illegal and uncontrolled area where wastes have been placed on or in the ground. See Landfill.

Binary Alloy

(english) An alloy containing two elements, apart from minor impurities, as brass containing the two elements copper and zinc.

Bright Dipping

(english) Chemical polishing of aluminum, often by treatment with a mixture of nitric acid and phosphoric acid, yielding a mirror-shiny (specular) highly reflective surface. It is almost always followed by anodizing to protect the surface and provide some choice of color.

Chlorofluorocarbons

(Environmental Engineering) Synthetic organic compounds used for refrigerants, aerosol propellants (prohibited in the U.S.), and blowing agents in plastic foams. CFCs migrate to the upper atmosphere destroying ozone and increasing global warming. Typical atmospheric residence times are 50 to 200 years.

Statically determinate:

(english) A statically determinate structure is one where there is only one distribution of internal forces and reactions which satisfies equilibrium. In a statically determinate structure, internal forces and reactions can be determined by considering nothing more than equations of equilibrium.

Brinell Hardness Test

(english) A common standard method of measuring the hardness of materials. The smooth surface of the metal is subjected to indentation by a hardened steel ball under pressure. The diameter of the indentation, in the material surface, is then measured by a microscope and the hardness value is read from a chart or determined by a prescribed formula.

Time-boxing

(Software Engineering) a project scheduling and control technique that establishes time boundaries for the completion of a specific project task

BREATHER

(english) A device which permits air to move in and out of a container or component to maintain atmospheric pressure.

Customer

(Software Engineering) the person or group that has requested the software and will be paying the bill for its development

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