Basic introduction The Academy of Science of the Royal Society of Canada is one of the most important scientific groups in Canada, Royal Academy of Sciences, Canada Approach is about 1,000 acade...

Formula General : Define recovery coefficient E = (V ' 2 -v' 1 1 >) / (V 1 -v 2 ), if only the altitude collision is considered, the relative speed is opposite to each other because th...

Introduction Dolch (Bulgarian: добрич; Romanian: bazargic) is a city in the northeast of Bulgaria. Dolch is the 8th city of Bulgaria, also a central city in the southern Bolua region. Dolch is the...

Introduction Baidu Baidu actuarial use of big data, is committed to providing coverage of Internet advertising, consumer attitudes to advertising, and consumer behavior under the influence of adve...

Synonym core switch Generally refers to the three-layer switch application background For the convenience of security and management, mainly in order to reduce the hazard of the broadcast storm, l...

relationships between the characters Correction off error correction mother Empress Eugenie error 4,651,360 feedback People introduction Franco-Prussian war broke out in the early...

synonym network access server Generally refers to the access server background knowledge users can access IP networks on the access server by utility telephone network, implement remote access Int...

Definition The origin of the optical thickness: In the process of preparing a film, in addition to the appropriate film material and deposition process, the thickness of the film deposition proces...

Some objects can be emitted from the air, and the spectra formed by the light produced directly is called the emission spectrum. The emission spectrum can be divided into three different categories...

Basic introduction Colored people are generally defined by European racists as all people outside the caucasian, is an extreme racist perspective because white is also a color. The skin color of e...

Original First look at our origin Live typography Bi Sheng inventive literal printing in Sui and Tang Dynasties, the carving print, but it is expensive, and it is not economical Improved innovat...

Introduction Theoretical introduction The theory is that the electrons in which the electrons in the crystals are co-cultured in the entire crystal, and the co-culture electron is in the periodic...

Concept glazed glass is a colorful and easy-melt glaze that is applied to the glass surface, heated to the glaze, so that the glaze layer is firmly combined with the glass, annealed or Tempered tr...

History Background June 30, 1947, Liu Bocheng, Deng Xiaoping complied with the instructions of the Party Central Committee and Chairman Mao, and the Jin Yulu Yushan Army 120,000 main force jumped...

morphology cattail (9) or marsh aquatic perennial herb. Rhizome cream, white tip. Stems stout, 1-2.5 meters high. Leaves linear, leaf length 45-95 cm, 0.5-1.5 cm wide, glabrous, the upper flat...

Introduction John · Fanbler Jazz (Sir John Vanbrugh), his drama is vulgar and there is no lade. He is one of the revival drama writers attacked by Jerry Koril, the latter degraded their work a...