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排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
V. V. Teleshov 《Russian Metallurgy (Metally)》2007,(2):161-165
Experimental data are often approximated by two-parameter relations in the form of a power or an exponential function. When a number of similar objects are considered, the parameters of these relations are connected by a correlation dependence. The examples of empirical relations where this dependence is observed are considered. In all cases of this correlation dependence, the value of an approximating function changes by several orders of magnitude when its argument varies by several times, and the initial data for the calculation of the empirical-equation parameters are located in a relatively narrow band in the coordinate space. This behavior is always accompanied by a linear relationship between the empirical coefficients of the equations obtained for a number of similar objects. 相似文献
993.
M. A. Abroyan S. L. Kosogorov I. V. Nabokova N. A. Uspenskii V. A. Chumichev V. B. Shapiro V. Ya. Shvedyuk 《Instruments and Experimental Techniques》2007,50(4):530-533
A system for real-time measurements of the current-density distribution in electron beams ejected from large-area electron accelerators has been developed. The system, which is based on Faraday cups, a microprocessor, and a PC, is designed for measuring the parameters of the electron beams ejected from large-area accelerators—devices for ionizing electroionization lasers and technological accelerators—and ensures real-time monitoring of the current-density distribution over the electron-beam cross section with a relative measurement accuracy of at least ±2%. 相似文献
994.
S. A. Abramov A. A. Bogolyubskaya V. A. Rostovtsev V. F. Edneral 《Programming and Computer Software》2007,33(2):55-59
An annual report on meetings of the scientific research seminar on computer algebra is presented. 相似文献
995.
A compound concentrator guide has been investigated that provides uniform energy distribution over the receiver. The values of the focal parameters of the parabolas that form the quasi-parabolic guide curve have been determined. The parametric equations of the curve along which the parabolas foci travel have been set up. Arrangement variants of the guide curve branches have been considered, and the compound concentrators have been assessed. 相似文献
996.
M. Sh. Marasulov V. D. Markova D. N. Sabirova Kh. A. Aslanov N. V. Tverdikov 《Fibre Chemistry》1986,17(6):435-436
Conclusions An attempt has been made to use the KÉ-250-ShS machine for twisting acetate yarns.It has been found that in developing a new twisting machine it is advisable to use a checkerboard disposition of the spindles in its lower part with the objective of reducing the noise level, and also to use pedal braking to stop the spindles. This helps increase the productivity of twister labor, and mechanization and automation of operations associated with transfer in removing packages of weight not less than 3 kg.Translated from Khimicheskie Volokna, No. 6, pp. 40–41, November–December, 1985. 相似文献
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