According to the close relationship between the high grade element arsenic and gold in ore forming components, X ray fluorescence spectrometry can be used to reveal the existence of potential g.

This paper poited out that in the market compete conditions,the operation cost must be decreased, firstly , the sintering raw material and fuel constructions must be optimized, and then, the technical content must be increased, saving energy consumption, and producing high grade and high basicity sinter.

The Bilihei gold deposit in Inner Mongolia:the first large-sized high-grade concealed porphyry Au deposit discovered on the northern margin of North China plate

This article introduces the method of producing high-grade tripentaerythritol by removing inorganic and organic impurities.

It should be true on content, should be noval on form, should be ingenious on skill, should be high taste on effect.

Therefore,Chinese teacher should,in view of times,have an eye to improve nation s quality,strengthening the high quality thought training of the students in the course of teaching.

Because it is a leading method to strengthen~ the cultural and ideological Progress in a school,high quality campus culture can enliven the school s atmosphere and will help the students to improve their quality.