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761.
L.A. Sromovsky H.E. Revercomb V.E. Suomi 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1985,5(9):37-40
New Venus temperature profiles, derived from engineering measurements of the Small Probe Net Flux Radiometer (SNFR) instruments generally confirm to high accuracy the vertical structure and horizontal temperature contrast results of Seiff et al. /1/. 相似文献
762.
M. O. Riazantseva O. V. Khabarova G. N. Zastenker J. D. Richardson 《Cosmic Research》2005,43(3):157-164
This work is devoted to studying the sharp boundaries of small-scale structures of the solar wind according to the data of measurements with high time resolution onboard the INTERBALL-1 satellite and simultaneous measurements of the WIND spacecraft. Such issues as the character of change of various plasma and magnetic field parameters on these boundaries, the duration of boundary passage and the balance of the total (thermal plus magnetic) pressure on the boundaries of the structures are considered. On the basis of the vast statistical material available, the typical conditions in the solar wind are investigated, in which such sharp boundaries are observed.__________Translated from Kosmicheskie Issledovaniya, Vol. 43, No. 3, 2005, pp. 163–170.Original Russian Text Copyright © 2005 by Riazantseva, Khabarova, Zastenker, Richardson. 相似文献
763.
M. M. Shvarts S. M. Grach E. N. Sergeev V. L. Frolov 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1995,15(12):59-62
Results of computer simulations of the broad continuum (BC) feature of stimulated electromagnetic emissions (SEE) of the ionosphere are presented. The simulations were performed using the model of BC generation based on the double transformation of electromagnetic waves to upper hybrid (UH) waves and back with artificial small scale irregularities (ASI) of plasma density. An induced scattering of the UH waves by thermal ions provided a wide spectrum of SEE. For the simulations an empirical model of the ASI spectrum, development and decay was used. 相似文献
764.
V.V Benghin V.M Petrov Yu.V Ivanov V.A Shurshakov S.B Kozlova V.D Nguyen J.F Bottollier M Siegrist 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1996,18(12):167-170
The estimation of radiation quality factor in space flights is a serious problem of space dosimetry. The solution of this problem is based on LET-spectra measurements. The “NAUSICAA”-device installed on the “MIR” station has a detector with a large geometric factor, that gives the possibility of measuring LET-spectra with sufficient statistic in relatively short time interval and hence the corresponding Q. LET-spectra are accumulated through 24 hour periods and equivalent dose (H), absorbed dose (D), quality factor and flux (F) are measured every 10 minutes. The obtained data permit the estimate of the diurnal Q and Q in South Atlantic Anomaly. These values vary in the range of 1.4 – 2.2. The analysis of these values including their comparison with the calculated results is given in this paper. 相似文献
765.
Microorganisms and enzyme activity in permafrost after removal of long-term cold stress 总被引:1,自引:0,他引:1
E.A Vorobyova V.S Soina A.L Mulukin 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1996,18(12):103-108
Associations of immobilized microbial cells and organic-mineral complexes containing active enzymes are resistant to long-term (from tens of thousands to millions of years) effects of extremely low temperatures. This association enables the cells to restore their metabolic activity during permafrost thawing, because interactions with the heterogenous medium is made possible by the availability of active immobilized enzymes. The long-term effect of the cold probably favors an adaptational change of microbial metabolism that activates enzymes and cells during thawing. 相似文献
766.
K.Ya. Kondratyev V.V. Kozoderov 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1985,5(6):105-109
Based on the 1974–78 NOAA data, characteristic features of the variability of the Earth's radiation budget and its components over the area of the Northern Atlantic have been analyzed. Calculations of the mean square deviation for the ERB and its components have let to the conclusions that anomalous regions of maximum variability may be considered as energy-active zones. 相似文献
767.
L J DeLucas C D Smith D C Carter P Twigg X M He R S Snyder P C Weber J V Schloss H M Einspahr L L Clancy A McPherson S Koszelak M M Vandonselaar L Prasad J W Quail L T Delbaere C E Bugg 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1992,12(1):393-400
The first microgravity protein crystal growth experiments were performed on Spacelab I by Littke and John. These experiments indicated that the space grown crystals, which were obtained using a liquid-liquid diffusion system, were larger than crystals obtained by the same experimental system on earth. Subsequent experiments were performed by other investigators on a series of space shuttle missions from 1985 through 1990. The results from two of these shuttle flights (STS-26 and STS-29) have been described previously. The results from these missions indicated that the microgravity grown crystals for a number of different proteins were larger, displayed more uniform morphologies, and yielded diffraction data to significantly higher resolutions than the best crystals of these proteins grown on earth. This paper presents the results obtained from shuttle flight STS-32 (flown in January, 1990) and preliminary results from the most recent shuttle flight, STS-31 (flown in April, 1990). 相似文献
768.
769.
H.E Revercomb L.A Sromovsky V.E Suomi R.W Boese 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1985,5(9):81-84
Corrected thermal net radiation measurements from the four Pioneer Venus entry probes at latitudes of 60°N, 31°S, 27°S, and 4°N are presented. Three main conclusions can be drawn from comparisons of the corrected fluxes with radiative transfer calculations: (1) sounder probe net fluxes are consistent with the number density of large cloud particles (mode 3) measured on the same probe, but the IR measurements as a whole are most consistent with a significantly reduced mode 3 contribution to the cloud opacity; (2) at all probe sites, the fluxes imply that the upper cloud contains a yet undetected source of IR opacity; and (3) beneath the clouds the fluxes at a given altitude increase with latitude, suggesting greater IR cooling below the clouds at high latitudes and water vapor mixing ratios of about 2–5×10?5 near 60°, 2–5×10?4 near 30°, and >5×10?4 near the equator. 相似文献
770.