The set of primary standards at the Mendeleev All-Russia Metrology Research Institute is considered in relation to certifying building and thermal-insulation materials for thermophysical properties, which is a very important aspect of energy saving. Prospects are demonstrated for developing the primary ...
“The portable, cold-atom vacuum standard has passed its first big test,” says Eckel. “If you build two presumably primary standards of any kind, the very first step is to make sure they agree with each other when they measure the same thing. If they disagree, they are clearly not st...
A PRIMARY STANDARD OF GAS-FLOW MEASUREMENTAccurate measurement of flowrate can be achieved by collecting a quantity of the flow for a measured time and relating the measurements to standards of mass and time. Liquid flowrate, for example, can be measured accurately by this means but the ...
5) quantum measurement standards 量子计量基准 例句>> 6) reference standard of measurement 计量基准;量度参照标准补充资料:计量基准 计量基准 measurement primary standard 1 iliang Jizhun计工基准(~Ineni pn川四ry standard)为了定义、实现、保存或复现量的单位或一个或多个t值,用作参考的实物t具、测量...
Primary methods of measurement and primary standards The definition and concept of primary method are explained, taking examples from the fields of thermometry and measurements of amount of substance. It is s... T,J,Quinn - 《Metrologia》 被引量: 140发表: 1997年 Process for fluorimetric monitori...
Automation of Surface Roughness Measurements Article 15 October 2015 How levelling and scan line corrections ruin roughness measurement and how to prevent it Article Open access 17 September 2020 References G. Wilkening and L. Koenders, Nanoscale Calibration Standards and Methods. Dimensional and ...
A European quality assurance network for radiotherapy: dose measurement procedure In the frame of the experimental implementation of a European quality assurance network for external radiotherapy, the methodology in the European Measurin... S Derreumaux,J Chavaudra,A Bridier,... - 《Physics in ...
The National Institute of Standards and Technology (NIST) has redefined its gas pressure scale, up to 17 MPa, based on two primary standard piston gauges. The primary standard piston gauges are 35.8 mm in diameter and operate from 20 kPa to 1 MPa. Ten secondary standard piston gauges, two ...
Measurement Techniques Aims and scope P. V. Bazylev, A. V. Izotov, A. I. Kondratiev, V. A. Lugovoi, V. P. Nigai & K. N. Okishev 65 Accesses Explore all metrics The results of creating a national standard for the unit of the propagation velocity of ultrasonic waves in solids...
Development of Electrical Quantities Primary Standards: The developments of primary standards for electrical quantities that practically realize the electrical units such as ampere (A), volt (V), ohm (惟), and f... RSM Ali - 《Transactions of the Institute of Measurement & Control》 被引量: ...