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Corrections to the IAU 1976 precession constant and the coefficients of the IAU 1980 nutation series from VLBI observations被引量：2: 《Chinese Science Bulletin》1998年第12期1019-1022,共4页Li Jinling Wang Guangli; theNationalNaturalScienceFoundationofChina (GrantNo .19473110 ); In the aspect of examination by observations and based on a longer data span and improved precision of very_long baseline interferometry observations, the corrections to the IAU 1976 precession constant and the coeffi...; 关键词：very long baseline interferometry (VLBI) PRECESSION NUTATION CORRECTIONS to coefficients.

TUNNELING CORRECTIONS TO TRANSITION STATE THEORY FOR REACTION H+ H_2(v=0)→H_2(all v)+H: 《Chinese Science Bulletin》1991年第3期193-196,共4页董顺乐卢兆铭王燕; Ⅰ. INTRODUCTIONThe tunneling was not considered in conventional transition state theory (TST). Especially within low reaction temperature the calculation of the conventional TST can bring about obvious errors. In 197...; 关键词：transmission probability transition state PARTITION function.

SOME CORRECTIONS OF INCOHERENT SPIN-ECHO METHOD FOR MEASURING NMR SPECTRUM IN FERROMAGNET: 《Chinese Science Bulletin》1988年第2期99-105,共7页张一德黄陆加李发伸; Project supported by the National Natural Science Foundation of China; The NMR frequencies of different isotopes in ferromagnets are scattered over a wide range. For example, the NMR frequencies of 3d ferromagnets are from 15 to 800 MHz. A much simpler method for the NMR investigation ov...; 关键词：ISOTOPES nuclei SCATTERED simpler transmitter SPIN receiver excitation spectrometer DISADVANTAGE

THE JOINT CORRECTIONS OF RADIO TIME SIGNALS IN CHINA: 《Chinese Science Bulletin》1966年第9期392-394,共3页叶叔华吴守贤; Accurate universal time is essential to longitude determination and is also widely used for practical purposes. The work of universal time service is generally divided into two steps: (i) transmission of precise radio...; 关键词：universal preliminary correction RADIO LONGITUDE INSTRUMENTAL STEPS keeping PEKING institutions

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