On the basis of investigation,we anal yse the status quo,characteristics,and the reasons of the floating po pulation who have children and take on commerce or construction,then work ou t the effects of floating population on social and economic development of Ji nan.

In relation to such issue,the author will analyze the reasons subjectively and objectively.

The thesis briefly introduces the geographical distribution,cause of formation,linguistic features and the connection with the periphery dialects of Zhenping Dialect.

Cause of formation of cotton seedlings with high and slim stems nursing with nutrition bowl,and nursing in floating system were expounded,and precautionary measures were provided.

The Analysis for Presence of CO_2 Content Changes and Causes of Daqing Petrochemical Feedstock Ethylene Cracker;

By comparison between English and Chinese,from the perspective of classification,causes and elimination of ambiguity,this article aims at strengthening the comprehension of the two languages and using them to write and translate in a.

Study on the Causes of Onion Bolting and the Control Measures;

Through the rail flatness inspection, the causes for waviness are found.

Through the analysis of the cause of early illness of road surfaced with tar and concret.

The forming reason of the sinuous river and administration measure on Mayi River;

The characteristics and forming reason of faint-sliver defect found in cold-rolled steel sheet were discussed .

From the view point of political geography,this paper analyzes the current changes of the world political regions and the forming reason of regi.