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ค้นเจอ 349 รายการ

Mixed liquor volatile suspended solids (MLVSS)

(Environmental Engineering) The volatile suspended solids concentration in the activated sludge tank.

Jacking Equipment

(Concrete Engineering) In prestress concrete, the device used to stress the tendons.

Blowhole

(english) A defect in a casting caused by trapped steam or gas.

Mixed liquor suspended solids (MLSS)

(Environmental Engineering) The total suspended solids concentration in the activated sludge tank.

Total dissolved solids

(Environmental Engineering) (TDS) is the amount of dissolved matter in the water.

Blue Annealing

(english) Heating hot rolled ferrous sheet in an open furnace to a temperature within the transformation range and then cooling in air, in order to soften the metal. The formation of a bluish oxide on the surface is incidental.

Classes - a basic construct in object

(Software Engineering) oriented methods that categorizes elements of the problem

Aging 2

(english) A change in properties that occurs at ambient or moderately elevated temperatures after hot working or a heat treating operation (quench aging in ferrous alloys), or after a cold working operation (strain aging). The change in properties is often, but not always, due to a phase change (precipitation), but does not involve a change in chemical composition. In a metal or alloy, a change in properties that generally occurs slowly at room temperature and more rapidly at higher temperatures.

Cell

(Environmental Engineering) A unit of varying dimensions in a landfill which is isolated from the environment by 6 to 12 inches of soil cover. A cell is one day's waste or less. A cell is covered with soil at the end of each day.

Closure

(Environmental Engineering) The act of preparing a landfill for long term inactivity, including placement of a cover over the landfill to prevent infiltration of surface water.

Boron (chemical symbol B)

(english) Element N. 5 of the periodic system. Atomic weight 10.82. It is gray in color, ignites at about 1112 (degrees) F. and burns with a brilliant green flame, but its melting point in a non-oxidizing atmosphere is about 4000 (degrees) F. Boron is used in steel in minute quantities for one purpose only- to increase the hardenability as in case hardening and to increase strength and hardness penetration.

Defect amplification

(Software Engineering) when a defect is introduced early in the software process and remains undetected, it often is amplified into multiple defects later in the software process

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