Common form of the pressure switch, volume switch, time switch and flow switch, that is, to achieve the preset inspiratory pressure, capacity, time or flow rate is converted to breath. 常见的方式有压力切换、容量切换、时间切换和流速切换,即吸气达到预置的压力、容量、时间或流速则转为呼气。
By means of this model, which maintains the preset terminal pressure, every target function can be calculated with the given parameters under basic assumed conditions. 该模型能保证管道终端气体压力为预定值,在基本假设条件下,由已知参数求出各目标函数(管道建设折算费用、压气站建设折算费用、运行费折算费用、总折算费用)。
The calculation results show that the shock wave generated by secondary flow jet move toward downstream divergent section and the thrust vector angle gradually decreases to a preset value as the nozzle pressure ratio increases. 计算结果表明,随着喷管压比的增加,次流喷射所产生的激波向扩张段下游移动,且喷管矢量角不断减小到一固定值;
Impacts of pressure regulator parameters on preset pressure in micro-irrigation system 微灌压力调节器参数对出口预置压力影响的研究
Development of an Overfall Valve with Preset Pressure Value Mechanism 可知设定值式溢流阀的研制