您要查找的是不是：
- Vapour vacuum pumps; measurement of performance characteristics; part 2: measurement of critical backing pressure 蒸汽真空泵。性能特性的测量。第2部分:临界前级压力的测量
- critical backing pressure 临界背压
- critical back pressure ratio 临界背压比
- What is maximum acceptable back pressure? 如果是,给出可接受的最大背压?
- Seating load and tightness is dependent on back pressure. 阀座密封负载和紧密性与反压力相关。
- This back pressure is no problem for the rupture disk. 如果压力放散系统的压力进入到爆破片中，对爆破片不会产生影响。
- Several different types of valves are in use. Some are back pressure valves. 有几种不同的阀在使用中,有些是反向压力阀。
- 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。
- 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。
- Back Pressure Propagation of network congestion information upstream through an internetwork. 网际中上传的网络拥塞信息。
- This filter is designed to have very little back pressure and is easy to squeeze with a faster flow rate. 这是为了过滤很少背压,易于挤压得更快流量。
- The big and small rubber plugs has locking mechanism to prevent back pressure and has good drillability. 大小胶塞设有锁紧机构，注完水泥后可防止回压，且附件具有良好的可钻性；
- The reason a steady state was never reached was that the back pressure built up too slowly. 不能达到稳定状态的理由是背部压力上升太慢。
- The spray penetration decreases and overall SMD increases with the increasing back pressure. 随著背压的升高，油束贯穿度减小而整体索特平均直径增加。
- The final solution to improve control, and extend sleeve life was to furnish the system with TFO back pressure devices. 而改善控制能力，延长套管使用寿命的最终解决方案则是为系统配置TFO回压装置。
- Phases 2(3)temperature control, ejected speed. Backing pressure and screw speed is suitable for various plastic to confectioned. 二（三）段温度控制，射速，背压，螺杆转速无段调整适合各种精密塑胶之零件成型。
- 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。
- She is a very discerning art critic. 她是位眼光敏锐的艺术评论家。
- I think the chastisement to him is too critical. 我认为对他的惩罚太严厉了。
- Rose bushes shoot again after being cut back. 玫瑰丛修剪後还能再长出新枝。
