upper cut-off frequency (at a2-level)
1верхняя частота среза по верхнему уровню относительного затухания пьезоэлектрического (электромеханического) фильтра — (fc4) верхняя частота среза по a2 Максимальная частота полосы пропускания или задерживания по верхнему уровню относительного затухания пьезоэлектрического (электромеханического) фильтра. [ГОСТ 18670 84] Тематики электрические фильтры Синонимы… …
2верхняя частота среза по нижнему уровню относительного затухания пьезоэлектрического (электромеханического) фильтра — (fc2) верхняя частота среза a1 Максимальная частота полосы пропускания или задерживания по нижнему уровню относительного затухания пьезоэлектрического (электромеханического) фильтра. [ГОСТ 18670 84] Тематики электрические фильтры Синонимы верхняя …
3Spectral efficiency — Spectral efficiency, spectrum efficiency or bandwidth efficiency refers to the information rate that can be transmitted over a given bandwidth in a specific communication system. It is a measure of how efficiently a limited frequency spectrum is… …
4Transmission electron microscopy — A TEM image of the polio virus. The polio virus is 30 nm in size.[1] Transmission electron microscopy (TEM) is a microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it… …
5Symbol rate — In digital communications, symbol rate (also known as baud or modulation rate) is the number of symbol changes (waveform changes or signalling events) made to the transmission medium per second using a digitally modulated signal or a line code.… …
6Stopband — A stopband is a band of frequencies, between specified limits, in which a circuit, such as a filter or telephone circuit, does not let signals through, or the attenuation is above the required stopband attenuation level. Depending on application …
7china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material …
8China — /chuy neuh/, n. 1. People s Republic of, a country in E Asia. 1,221,591,778; 3,691,502 sq. mi. (9,560,990 sq. km). Cap.: Beijing. 2. Republic of. Also called Nationalist China. a republic consisting mainly of the island of Taiwan off the SE coast …
9Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
10Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… …
