This paper discusses the law of statistical caustation in quantum mechanics, and points out that statistical determination theory is a kind of new form for the relation of caustation.

Sound power determination in reverberation chambers is discussed in the light of normal mode theory. Rigorous as well as statistical formulas are found, and the aged problem of.

The author introduced the results of the determination of the methanol and multiple_alcohol content of 55 kinds of wine, and made a statistical analysis of their content distribution.