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To improve the aerodynamic characteristics of heavy-duty commercial vehicles, the main drag reduction measures are reducing the vortex of the cab and the container, the end of the container and the bottom of the container. 1.Introduction In recent years, people have paid more and more attention to the vehicles aerodynamics research in the world.
Computational Fluid Dynamics (CFD) is an attractive approach as it can provide a large amount of data and detailed information on the flow field.
Therefore, the main drag reduction measures should be carried out to improve aerodynamic characteristics of heavy commercial vehicles and reduce the aerodynamic drag in these areas.

Recently, many studies on the weight reduction of automobile for fuel saving were underway.
Especially, researches on weight reduction of automobiles wherein strength of components and functional factors are satisfied while weight is decreased are very active.
The measured dimension data of the distance between two holes (60.36mm) showed that the average deviation for Al 5052 fine blanked parts and Eco-Al 5052 fine blanked parts were 0.053mm and 0.027mm, respectively.

A decrease of the deformation temperature leads to a reduction in grain size and to a stress increase for all compositions.
This may lead to the observed reduction of the flow stress.
These results fit the data [4], according to which hydrogen forces out other impurities from dislocations.

The data groups which are created from data for learning are called standard spaces.
These data are referred to as data for learning
This data is referred to as individual
One data is selected as individual, and standard spaces are created from other 473 data.
Data for estimation Test No.

Then the data are reformed on the motherboard and sent to the PCI data acquisition card by LVDS bus.
After analyzed and processed by FPGA, the data are reformed into packet of feedback data.
When sampling and processing the parallel data of multi channels, each control signal pulse in each channel will generate the corresponding data testing packet, which needs high-speed and large capacity data storage.
PCI data acquisition PCI data acquisition card is responsible for connecting the data processing unit and the computer.
In the program, the initialization of acquisition chip sampling, data buffer, analysis of data and data storage are needed.

On-site data exchange service.
Thus, the on-site data exchange is necessary.
Production Data Acquisition.
Design of Data Communication Service.
It receives and processes data exchange at each processing points from the terminal and then sends commands and data.

The spinel formation takes place under different oxygen pressures ( 2OP ) in the refractory lining from air ( 2OP = 0.21atm) to strong reduction atmosphere ( 2OP < 10 -15atm).
Spinel reduction mechanism could be defined as the reaction 7.
In carbon containing specimens or in reducing atmosphere, the thermodynamic datas from JANAF tables [12] for Al-C-O system shown that Al (g) have high partial pressure at 1600˚K.
The microstructure of SPGAl samples fired in air and coke bed were similar to SPAl sample with the exception of presence of graphite in reduction atmosphere and higher amount of intergranular porosity.
Conf. on Refractories 2004, p. 104 [12] JANAF Thermochemical Data sec. ed., National Standard Reference Data System, National Bureau of Standards us.

TCP mode), a data connection channel can be established to carry out rapid transmission of large amounts of data.
A long and large data transmission can be realized by using this way, but the delay of data transmission is relatively large.
The process that using DataSocket Server to perform distributed data communication is as follow: the releaser of the test data writes the data to the DataSocket Server by using DataSocket API, and then the user of the test data read the data from the DataSocket Server by using Server API.
Moreover, users can use the database management technology to realize the function of data storage and data playback, so query and management of the data is convenient for users.
When data arrives at DataSocket Server data channel, the data will trigger the data update event of the ActiveX client control, and then the ActiveX client control will read data from DataSocket Server in the event function to perform display and other operations.

This paper reports the results of failure investigation of a herringbone gear in a reduction gearbox used in a hot rolling steel re-bar mill in Thailand.
Background The failed herringbone gear being investigated was used in a reduction gearbox of 3-high roughing stand in a hot rolling steel mill in Thailand.
Using the above data, the stress resulting from the load in normal operating condition if there was no misalignment was 26.7 MPa.

The use of microshot peening technology with minute media has become more widespread in consideration of the reduction of the notch effect in the material surface.
More recently, the use of microshot peening (MSP) technology with minute media has become more widespread in consideration of the reduction of the notch effect in the material surface.
The results were as follows. (1) The surface hardness data showed that, in the case of MSP-CS, work hardening extended deeper than the mean diameter of the media. (2) The compressive residual stress was added in the surface vicinity on MSP-CS workpieces.