The author neatly uses the multiple and tier sound insulation screen that has sound absorption ability, according to the actual circumstance and transaction demand of the dry coal shed.

By utilizing the regulations and improving the test materials, we finally finishe the design, production and application of the JRSH series flexible sound insulation screen.

The engineering prosperities of PMMA plastic board are described,which was applied in a true road traffic noise barrier building in China first time.

Based on architectural acoustics and the acoustic feafure of city traffic noise,the importance and means of establishing over head highway noise barrier are clarified from three aspects:noise source control,transmission and protection for victims.

The design of sound barrier was optimized.

To protect inhabitation environment,it is suggested that new technique should be utilized when the pavement were re-constructed,trees or shrubs should be planted to form green noise isolation belts,and sound barriers along the motorway should be constructed.

The node and network method and the IRTE method are used to calculate the radiative flux of the engine,the heat shield radiation and the plume radiation on the base flange and the jointing switch.

In an arbitrary curvilinear coordinate system,numerical simulation was performed for 3D turbulent combustion flow field of the afterburner with the cross-rippled heat shield,outer cold passage and jet nozzle.

WT5”BZ]The flow field calculation and buckling analysis were conducted for the afterburner with a heat shield,flame stabilizer and jet nozzle.