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A sound-recording method in which, for input signals of a given amplitude, the resulting recorded amplitude is inversely proportional to the frequency; the velocity of the cutting stylus is then constant for all input frequencies having that a design plan for material and equipment into a project ready for operation.

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A phenomenon occurring in a nonlinear system subjected to a sinusoidal input at constant frequency, in which the value of the amplitude of the forced oscillation can jump upward or downward as the input amplitude is varied through either of two fixed values, and the graph of the forced amplitude versus the input amplitude follows a hysteresis loop.


  1. To supply a signal to the input of a circuit, transmission line, or antenna. 2. Process or act of supplying material to a processing unit for treatment. 3. The material supplied to a processing unit for treatment. 3. A device that moves stock or workpieces to, in, or from a die. 4. Forward motion imparted to the cutters or drills of cutting or drilling machinery.


A circuit used in providing moving-target indication on a plan position indicator scope; cancels constant amplitude fixed-target pulses by subtraction of successive pulse trains.


  1. Intentional operation of equipment until it fails, to reveal design weaknesses. 2. A method of testing a material that degrades the sample under investigation.


  1. The point or edge of a diamond or other material set in a drill bit. Also known as cutting point. 2. The edge of a lathe tool in contact with the work during a machining operation.


Equipment of a design that has been type-tested and approved by an appropriate authority such as a governmental agency or classification society. Such an authority will have certified the particular equipment as safe for use in a specified hazardous atmosphere.


A type of cat-andmouse rotary engine in which the pistons are vanes which are sections of a right circular cylinder; two pistons are attached to one rotor so K that they rotate with constant angular velocity, while the other two pistons are controlled by a gear-and-crank mechanism, so that angular velocity varies.


The constant e, which is the ratio of the relative velocity of two elastic spheres after direct impact to that before impact; e can vary from 0 to 1, with 1 equivalent to an elastic collision and 0 equivalent to a perfectly elastic collision. Also known as restitution coefficient.


  1. Any saw for cutting cold metal, as opposed to a hot saw. 2. A disk made of soft steel or iron which rotates at a speed such that a point on its edge has a tangential velocity of about 15,000 feet per minute (75 meters per second), and which grinds metal by friction.


A procedure that employs water under pressure, in a new boiler before use or in old equipment after major alterations and repairs, to test the boiler's ability to withstand about 11/2 times the design pressure.

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