There is no discussion about it in detail in the general physics works that how the material element moves in the relevant mediums while the plane simple harmonic wave is propagating in the elastic medium so some questions are often raised by the readers.

This study presented the effect of multi-modification on microstructure and properties of high manganese steel by means of microstructure observation, X-ray diffraction line profile analysis and properties testing.

Determination of Potassium,Calcium and Magnesium Present as Impurities in Lithium Phosphate by Ion-Chromatography;

Determination of Impurities in High Purity Samarium by Inductively Coupled Plasma Mass Spectrometry;

Determination of impurities in nickel by ICP-AES;

Measurement of impurity element in pure gold with ICP-AES method;

Determination of ten impurity elements in zinc concentrate and zinc calcine by inductively coupled plasma atomic emission spectrometry;

Determination of five impurity elements in bismuth and bismuth oxide by inductively coupled plasma-atomic emission spectrometry;

Determination of impurity elements in tungsten concentrates by ICP-MS;

Determination of impurity elements in pure copper by inductively coupled plasma atomic emission spectrometry

The paper describes the technique of accurately measuring concentration of standard solution of Pb, Cd, Mg and determining impurity elements contained in the standard solution of Pb, Cd, Mg, Fe by ICP/MS.

Adding hetero-elements into SiC ceramic precursor can modify its physical and chemical properties to improve the comprehensive property of the ceramic.

The aim on the research of hetero-elements containing SiC fibers is to develop high performance and new types fibers.