There is a parallel relationship between getting construction and pkcing construction from the areas of syntax and semantics, especially the relevant constraints of grammatical transformation.

Through the research on much language material, the thesis points out that there is a parallel relationship among getting construction, giving construction and placing construction, either from the angle of syntactic or semantic.

By comparing Soxhlet extraction with ultrasonic method,conclusion has been obtained that Soxhlet method is suitable for extracting multiple persistent organic pollutants from oil using acetone and petroleum ether as tactant and eluant in a proportion of one to one and with a recovery rate between 70%~90%,whereas ultrasonic method can be used for individual POPs,which needs less tim.

The technology studied the de-fat and decolorization and deodorization from silkworm chrysalis with organic solvent(petrol, benzene, ether, 100%ethanol, acetone) by soxhlet extraction and soak extraction.

Objectively, the crime of bribery means that state officials extort money or property from another person, or illegally accepts another person s money or property in return for securing benefits for that person by taking advantage of their duties.

Working principle and structural features of SYZX75 wire-line coring hydro-hammer are presented.

7 mm wire-line coring tool driven by a mud motor.

To meet the demand of wire-line coring drilling in complicated formation,compound solid-free drilling fluid of CL plant glue was compounded and used instead of drilling mud with the property of wall protection and leaking stoppage.