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ค้นเจอ 771 รายการ

Absorbed Moisture

(Concrete Engineering) Moisture which is mechanically held in a material. In aggregates, that water which is not available to become part of the mixing water is designated "absorbed" water.

Batch Anneal

(english) The process by which a large, stationary stack of steel coils (4 coils high) is subjected to a long heat-treating cycle. This process enables the cold-rolled sheet to fully recrystallize into the softest possible product conforming to customer specifications. Controlling the recrystallization process makes a fine-grained microstructure easy to obtain, and minimizes the tendencies for retention of directional properties of the rolled steel which could produce undesirable shapes in the stamping of a cylindrical part such as a can. Also see Anneal and Continuous Anneal.

Mass:

(english) A property of an object measured by the degree that it resists acceleration.

Hindered (Zone) settling

(Environmental Engineering) Settling in which particle concentrations are sufficient that particles interfere with the settling of other particles. Particles settle together as a body or structure with the water required to traverse the particle interstices.

Bend Test

(english) Various tests which is used to ascertain the toughness and ductility of a metal product, in which the material is bent around its axis and/ or around an outside radius. A complete test might specify such a bend to be both with and against the direction of grain. For testing, samples should be edge filed to remove burrs and any edgewise cracks resulting from slitting or shearing. If a vice is to be employed, then you must line the jaws with some soft metal, to permit a flow of the metal in the piece being tested.

Source reduction

(Environmental Engineering) The elimination or reduction of the waste at the source by modification of the actual process which produces the waste.

Anaerobic process

(Environmental Engineering) A process which only occurs in the absence of molecular oxygen.

Maximum contaminant level (MCL)

(Environmental Engineering) The maximum allowable concentration of a given constituent in potable water.

Total suspended solids

(Environmental Engineering) (TSS) is the amount of suspended (filterable) matter in a water.

Bevel

(english) Angle formed between the prepared edge of the end of tube and a plane perpendicular to the surface. Standard pipe bevel is 30 degrees.

BREATHER

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

Reaeration

(Environmental Engineering) The dissolving of molecular oxygen from the atmosphere into the water.

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