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Bauxite

(english) The only commercial ore of aluminum, corresponding essentially to the formula Al2O3xH2O.

Chemical oxygen demand (COD)

(Environmental Engineering) The amount of oxygen required to oxidize any organic matter in the water using harsh chemical conditions.

Nitrogenous oxygen demand (NOD)

(Environmental Engineering) The amount of oxygen required to oxidize any ammonia present in a water.

Flexibility:

(english) Flexibility is the inverse of stiffness. When a force is applied to a structure, there is a displacement in the direction of the force; flexibility is the ratio of the displacement divided by the force. High flexibility means that a small load produces a large displacement.

vinyl latex wall finish

สีทาผนังที่ผสมด้วยกาว หรือยางและน้ำ (ความหมายอย่างเดียวกับ vinyl latex paint)

Fixed connection:

(english) In two dimensions, a fixed connection between two members restrains all three degrees of freedom of the connected member with respect to one another. A fixed connection is sometimes called a rigid connection or moment-resisting connection.

Oxidative phosphorylation

(Environmental Engineering) The synthesis of the energy storage compound adenosine triphosphate (ATP) from adenosine diphosphate (ADP) using a chemical substrate and molecular oxygen.

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.

Dissolved oxygen (DO)

(Environmental Engineering) The amount of molecular oxygen dissolved in water.

Anoxic process

(Environmental Engineering) A process which occurs only at very low levels of molecular oxygen or in the absence of molecular oxygen.

Maximum contaminant level (MCL)

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

Axial force:

(english) A system of internal forces whose resultant is a force acting along the longitudinal axis of a structural member or assembly.