exit conditions
1.It is shown that with the decrease in size of particles, their velocity at the exit of Laval nozzle increases under the conditions of both the invariable gas parameters and the same Laval nozzle length; the Laval nozzle length increases with the size of particles under the same speeding rate of particles.
2.The intensity ratios of primary secondary, and tertiary fluorescence, as well as Compton and Raly scattering are given. Tne relative efficiency curve of the Si (Li) detector for an energy raage from 5 kcV to 100 keV, and the equivalent incident and exit angles of an annular 232Pu source under certain detection conditions are also calculated.
3.These are facts in general and not meant to be an all inclusive list of the adverse conditions and reasons that can keep the mill from producing straight stacking of the exit coil.
4.Combining construction of the southwest entrance-exit underpass of the Zhujiang Road Station of the Line 1 of Nanjing Subway, the author discusses and studies design parameters and construction technology of the little pipe shed method to support and excavate a large span tunnel under conditions of shallow cover soft and plastic soil, and analyzes and concludes application effects of practical projects.
5.This paper introduces the main properties of PP foam, the technology of extruding foam of chemically cross linked PP in one step:PP is crosslinked appropriately while plasticized in extruder, and foaming agent is decomposed at a suitable melt viscosity by controling the processing conditions, then free foaming is finished at the exit of the die and the foam is abtained.
