capacitance standard การใช้

• Au determination by activated carbon fibre filter cloth enrichment and separation hydroquinone capacitance standard
• Based the capacitance standards , studies on the calibration for the frequency response of single - port capacitor and the measurement for the frequency response of 4tp resistor are performed . the work is divieded in several parts as follows
• In recent years , the metrological scholars of some developed countries have been taking great efforts on capacitance metrology in the frequency range from acoustic frequency to microwave , and several countries have set up their capacitance standard in the extended frequency range
• In order to build and modify the national capacitance standard in the extended frequency range and testing system , national institute of metrology p . r . china establishes the corresponding project , named “ capacitance metrology ” , to study the technology of capacitance metrology in the extended frequency range
• The author accomplished this dissertation through taking part in the project . the main contents of this dissertation are : based on the national capacitance standard , the principle and the measurement method for capacitance metrology are studied , and the frequency response of a four - terminal - pair ( 4tp ) capacitor acted as the capacitance standard is measured in the extended frequency range