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ค้นเจอ 823 รายการ

Weight:

(english) The force on an object resulting from gravity.

Burnishing

(english) Developing a smooth finish on a metal by tumbling or rubbing with a polished hand tool.

BETA RATIO (#)

(english) The amount, expressed as a ratio, of particles in a fluid stream upstream of a filter, after the fluid posses through a filter, divided by the amount of particles downstream, for a particular size particle.

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.

Activation

(english) The changing of the passive surface of a metal to a chemically active state. Contrast with passivation.

Rotation:

(english) Motion of an object where the path of every point is a circle or circular arc. A rotation is defined by a point and vector which determine the axis of rotation. The direction of the vector is the direction of the axis and the magnitude of the vector is the angle of rotation.

Z-Mill

(english) The full name for z-mill is Sendzimir mill. A Z-mill operates with a very small diameter work roll, normally about 2 inches, backed up by a number of rolls in a pyramid-shaped stack. This roll set up allows you to exert extremely high forces through the work roll and yet keep the work roll from extreme flexing. The take-up roll on the Z-Mill also exerts a tension on the coil as it comes through the mill. The combination of high pressure and tension makes the mill capable of rolling material thin and flat.

Line of Action:

(english) The line of action of a force is the infinite line defined by extending along the direction of the force from the point where the force acts.

Linear Elastic:

(english) A force-displacement relationship which is both linear and elastic. For a structure, this means the deformation is proportional to the loading, and deformations disappear on unloading. For a material, the concept is the same except strain substitutes for deformation, and stress substitutes for load.

Band, Inside

(english) A loose steel frame placed inside a removable flask to reinforce the sand at the parting line after the flask has been removed.

Design walkthrough

(Software Engineering) a formal technical review of the design

Backing Board (Backing Plate)

(english) A second bottom board on which molds are opened.

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