In chapter 4, the effects of the nozzle construction and the operating parameters to the self excitation before the cavitations actions have been discussed.
第四章讨论空化发生前，喷嘴结构参数及运行参数对激振效果的影响，提出自激喷嘴的数值优化理论。
The method can be used for combustion Chambers with any shape to match the fuel injection pressure, nozzle construction, injector position and intake swirl ratio with chamber shape.
该方法可适于任意形状的燃烧室，能反映出喷油压力、喷油嘴结构及安装位置、进气涡流比等参数与燃烧室形状的匹配关系。
Reasonable gas feeding conditions are discussed in the continuous extruding process of foamed plastics. The influence of different posit, nozzle construction, rotational speed of screw, etc.
讨论了泡沫塑料连续挤出成型过程中的合理进气条件，分析了不同进气位置、喷嘴结构和螺杆转速等对气泡形态的影响。
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