Variable back pressure is the superimposed back pressure that will vary with time. 可变背压是随时间变化的附加背压。
Diplegs play an important role as pressure seals against the considerable back pressure generated. 料腿则起着对产生的相当大的背压加压密封作用。
In the event of negative supply pressure such contaminated fluids will not backflow to the supply source by backsiphonage. 万一存在这种污染流体的反压力，则要避免由于反虹吸而回流到供应水源中。
Reduced Pressure Detector Assembly shall be installed at each cross-connection to prevent backsiphonage and backpressure of hazardous materials into the potable water supply. 为了防止危险物质通过反虹吸和反压力进入饮用水供应系统，在每个交叉连接地方都应该安装一个减压检测阀总成。
The most important complication of urinary tract obstruction is renal parenchymal atrophy as a result of back pressure. 尿路梗阻最重要的并发症为反压所致的肾实质萎缩。
Soon Allen began to cater the paces and pushed him back on Kanda's thrust to experience more of those sensations. 很快，亚连开始迎合他的步调，甚至在神田撞击时将身体反压回去，以体验更多的快感。
Die inserts, together with the cores which form recesses, must endure the effects of temperature and injection pressure of the molten metal. 与形式隐藏，必须忍受温度和熔融金属的射入压力的作用的核心一起死插入物。
