人工翻译 要人工在线等

Vehicles on the road there are water film of the road, the tire and road surface adhesion will reduce with the increase of the depth of the water film.To study the water film thickness of road surface under the condition of rainfall changes in field measurement of pavement depth of the water film, through the test data and the depth of the water film prediction model and the model, the value of evaluation Gallaway model were analyzed, PAVDRN model and RRL model three kinds of water film depth prediction model.Research shows that the existing prediction models at home and abroad several mature pavement depth of the water film in the regression model prediction accuracy is higher than mathematical physical model, RRL model with Gallaway model and little differences between the data measured in experiment;Parameters have certain differences, mainly because of experimental conditions on the depth of calibration regression model of water film is larger, the influence of rainfall makes the road when the water film, impact on road surface friction coefficient of the water film should be to contain the way the average depth of the water film for characterization, structure depth rather than to eliminate pavement structure in the depth of pavement depth of the water film.

这段字吓退了多少人。。。被吓退的举个手。