دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The polycrystalline diamond cutter that be synthetised at superhigh temperature and pressure.

n: a special type of fixed-head bit that has synthetic diamond cutters that do not disintegrate at high temperatures. Compare polycrystalline diamond compact.

n: The polycrystalline diamond bit that using thermally stable diamond cutter as cutting element.

n: a temperature-sensitive element with variable resistivity for overload protection in motors.

n: a device consisting of two dissimilar metals bonded together, with electrical connections to each. When the device is exposed to heat, an electrical current is generated, the magnitude of which varies with the temperature. It is used to measure temperatures higher than those that can be measured by an ordinary thermometer, such as those in engine exhaust.

n: property of a system that is in mechanical, chemical, and thermal equilibrium.

natural thermal cracking of sedimentary organic material to oil and gas (C14 isotope is absent).

n: a combination hydrometer-thermometer designed to measure gravity and temperature of a liquid.

n: an instrument that measures temperature. Thermometers provide a way to estimate temperature from its effect on a substance with known characteristics (such as a gas that expands when heated). Various types of thermometers measure temperature by measuring the change in pressure of a gas kept at a constant volume, the change in electrical resistance of metals, or the galvanic effect of dissimilar metals in contact. The most common thermometer is the mercury-filled glass tube, which indicates temperature by the expansion of the liquid mercury.

n: the length of mercury in the capillary of a mercury-inglass thermometer, which indicates the temperature.