Industry
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CPC
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G01L23/221
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Parent Industries
GPHYSICS
G01Measuring instruments
G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
G01L23/00Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
