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ค้นเจอ 174 รายการ

Trickling filter

(Environmental Engineering) An attached growth biological process in which the microbial film is attached to non-moving rock or plastic media.

Software process improvement (SPI)

(Software Engineering) a set of software engineering activities that attempt to improve the state of software engineering practice within an organization

Bolster (die block)

(english) A “tool” or reinforcing part which supports the backer-which, in turn, supports an extruding die against the pressure of extrusion.

Usability

An informal measure of the ease with which a user interface can be learned and applied with efficiency and without errors

Change control

(Software Engineering) an umbrella process that enables a project team to accept, evaluate, and act on changes in a systematic manner

Photoautotrophic

(Environmental Engineering) Organisms which utilize inorganic carbon dioxide for protoplasm synthesis and light for an energy source. See autotrophic and chemoautotrophic.

Butt end

(english) The residual portion of an extrusion billet that is not forced through the die at the end of the extrusion cycle.

Kelly Ball

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

Bush-hammer

(Concrete Engineering) A tool having a serrated face, as rows of pyramidal points, used to develop an architectural finish for concrete surfaces.

Siting

(Environmental Engineering) Obtaining government (federal, state, and local) permission to construct an environmental processing, treatment, or disposal facility at a given site.

Backer (back-up plate)

(english) A “tool” or reinforcing part, which presses against the outer surface of an extrusion die, supporting it against the pressure of the extruding metal. The backer has an opening larger than the die aperture, allowing the extruded product to emerge without marring its soft surface.

Virus

(Environmental Engineering) A submicroscopic genetic constituent which can alternate between two distinct phases. As a virus particle, or virion, it is DNA or RNA enveloped in an organic capsule. As an intracellular virus, it is viral DNA or RNA inserted into the host organisms DNA or RNA.

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