团式
1.By logarithmic transformation of the analytic solutions expressing one dimension water mass tracer dispersion test with instant injection of tracer, a linear equation, whose independent variable X includes test data t and x , u with unknown value, dependent Y includes the test data c and t, and the linear constants include the longitudinal dispersion coefficient D , was derived.
3.Kinetic Study of the Metastable Ammonia Cluster Ions Using Reflection Time-of-Flight Mass Spectroscope
4.Containing three univalent basic atoms or radicals per molecule. Used of a base or salt.
5.On the basis of the features of active hydrogen atom and the literature reports,the general formula of glyphosate is given.
6.An observation is demonstrated that Au/S target,triggered by gallium ion beam (69Ga＋ ) under experiment of high performance secondary ion mass spectrometry (TOF SIMS),does emit a considerable species of cluster negative ions with general formula of Au1－ 15S0－ 5(see Fig.1 and Table 1).
7.Analyses the heperbola errors of the cone using the shaped turning tools designed and produced conven tionally, put forward the error expression of the workpicce and discuss the influence of the taper, rake face of the tool, the taper and axial dimension of the work on the errors, giving a suggestion of reduc tion of the errors with two sections of the straight edge or curved edge.
8.The structure of a perfluoropolyether derivative lubricating film (Commercial name: Z DOL) on hard disk was investigated by means of X ray photoelectron spectroscopy. As the results, the radicals in the lubricant molecules are found to be identifiable from the relevant XPS spectra of C1s.
