Refer to the classification of road roughness by ISO,the correct parameters are obtained,and the validity of the time domain model of road roughness based on rational function is validated.

Evaluate method and classification standard on lake eutrophication;

Research on index system and classification standard for household biogas region suitability evaluation;

Simultaneity,history of the measurement technology and the classification standards are mentioned.

A new testing method of biotoxicity and toxicity grading standard for oiifield chemicals and drilling fluids;

In order to explore the suitable way of establishing the pig carcass grading system, to achieve higher economy value with higher quality and to improve of quality of pigs in our country, the history, current situation and prospects of development pig carcass grading standards of foreign countries were summarized.

Objective To compare the prognostic value of different electroencephalography (EEG) grading standards of cerebral dysfunction after cerebrovascular diseases.

Study on American rice grading standards and inspective technology;

According to the study on the highway soil bank slope in the areas of Three Gorges,through the influential effect analysis of the action of reservoir water,the parameter and index assessment system and the corresponding grading standards of bank slope stability analysis are established.

Combing the produce cases,we regulated the analytic results and got the grading standards of Prunus spp.

Mechanism and classification criterion for large deformation of squeezing ground tunnels;