同时介质压力与上游端挠性结构的回弹力又增加了下游端阀座的密封。
While medium pressure and the upstream end of the resilient and flexible structures to increase the downstream end of the valve seat seal.
排放阀可以将收集的液体和固体微粒排放掉，防止液体流向下游端，污染下游端的压缩空气系统。
Discharge valve can be will collect the liquid and solid particle emissions, prevent the liquid flow off the downstream, the pollution downstream compressed air system.
结果表明，喷管下游端的壁面辐射损失高达壁面总热流的20 ~ 30%，在壁温计算时不容忽略。
Results showed that the net heat loss on the downstream side of the jet nozzle could reach 20 ~ 30% of total heat flux. Therefore it can not be neglected in calculating the wall temperature.
当管道某处突然发生泄漏时，泄漏处将出现瞬态压力突降，形成一个负压波，并以一定的速度向管道上、下游两端传播。
When there is a leak point in the pipeline, the pressure is fallen and the negative pressure wave occurs at once.
方法1。根据HSP70全长基因序列设计针对其编码区的引物，在下游引物的宁端加人MG7模拟表位的核昔酸序列。
Methods (1) The coding sequence of MG7 mimotope (GC23) was included in the reverse primer, and by PCR incorporated with HSP70 gene at the 3 terminus.
方法1。根据HSP70全长基因序列设计针对其编码区的引物，在下游引物的宁端加人MG7模拟表位的核昔酸序列。
Methods (1) The coding sequence of MG7 mimotope (GC23) was included in the reverse primer, and by PCR incorporated with HSP70 gene at the 3 terminus.
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