<正> We have put forward a new theory of solar wind in which the sector structure of interplanetary magnetic field can be explained as large-scale spiral waves
<正> The determination of ions of cyanide is one of the important subjects of environment monitoring. In conventional analytical methods, the procedure of disti
<正> Let f(z)∈S, g(z) be a K-Q. C. in the z-plane, g||z|<1=f(z), we call g(z) the quasi-conformal extension of f(z). Particularly, if g(∞)=∞ we denote g(z)∈S+∞K. Similar
<正> The method for coprecipitation separation and enrichment is a method often used in analytical chemistry, because it does not require special reagents and e