Multiple velocity difference model and its stability analysis;

Property analysis of the multiple velocity difference model;

The velocity difference of air in two channels of the conventional dense-dilute pulverized-coal concentration burner is 6-8 m/s,which impacts combustion stabilization,burning efficiency,and NOX emission.

Depth error in depth migration profile isn't equal to velocity error, sometimes it is twice as many as velocity error.

For a long time,the analysis of the velocity error almost were rarely quantitative,and only valid to the simple geology condition.

In obserations of the Earth s atmosphere with the GPS radio occultation technique,some factors such as the position error of GPS and LEO satellite,velocity error,clock drift,and observation error of carrier wave can bring error to the retrieval atmospheric parameters.

Analyses the relationship between speed of vehicle and traffic safety from operation speed,excessive speed,speed difference as well as Speed limit etc that related to the speed of vehicle,and educes some conclu- sion of their correlation.

In this paper,the authors discussed the influence of the speed difference caused by the speed raising of passenger train on double-line railway,for the reason that big difference between passenger trains and freight trains will influences the section carrying capacity.

It was deduced respectively the speed distributions of both magnetic liquid and sealed liquid in magnetic liquid dynamic seal,especially the motion equation s solution of the magnetic liquid if it is considered a non-newtonian fluid,and computes the speed differences of two-phase liquid interface.

Numerical value method is derived on the basis of structure model of NC machine tools feed system How the process error from gain,speed error,system frequency and steady position error of respond of system affect the process precision is analysed,and some principles of selecting parameters are also put forwr

The process errors caused by g ain,speed error and system frequency feature and the effect of steady sta te position error of response on the imp rovement of processing precision we re analyzed.