您要查找的是不是：
- Brief Statement on New Plastic Water Supply Pipe. 新型塑料给水管简述。
- Flush dirt and scale from supply pipe. 冲洗供应管道内的污物和水垢。
- There are some problems such as energy saving and savety in heat supply pipe netword of coking plant. 目前在焦化厂热力管网运行中存在着大量能源被浪费和不安全隐患。
- For parallel installations, you can install two or more small sized series 919's (when approved) to serve a large supply pipe main. 对于并联安装，如果得到批准，则可以安装两个以上系列919装置以配合较大口径的供应主管道。
- The ageing of water supply pipe may lead to decrease of water conveyance capacity,higher fault rate and deterioration of water quality. 金属给水管道老化会使管道的输水能力降低、故障率增高和水质变坏。
- It is composed of ZSFZ wet alarm valve, water-power alarm bell, delayer, pressure switcher, water supply pipe, water sprayer, etc. 系统由ZSFZ湿式报警阀、水力警铃、延迟器、压力开关、水流指示器、供水管网、闭式洒水喷头、报警控制装置和信号碟阀等部件组成。
- This paps introduces the advantages and disadvantages of P/A/P pipe and compares with varions water supply pipe in the building with polyethylene pipe materical. 本文介绍了铝塑复合管的优缺点，及其与各种建筑给水用塑料管材的性能比较。
- A spacecraft in connection with the metal pipe was fixed in the astronaut's spacesuit, which can supply pipe in addition to oxygen, food and water, but also play a security role. 一根连接在航天飞船内的金属管被固定在宇航员的航天服上，这根补给管除了能够输送氧气、食物和水，还起到一种安全保障的作用。
- ABSTRACT This paps introduces the advantages and disadvantages of P/A/P pipe and compares with varions water supply pipe in the building with polyethylene pipe materical. Base>给水管道的领域内有各种材质的塑料管材和金属管材可以应用，各有优缺点。
- Two or more smaller size valves can be piped in parallel (when approved) to serve a larger supply pipe main. 两个以上的小通径阀门可以安装在并联管线上（如果得到认可），用以服务大型主供应管线。
- This device should be installed at the furthermost downstream end of the supply pipe or fixture where temporary spillage due to critical flow pressure conditions can be discharged harmlessly. 这种装置应该安装在供应管道或卫生洁具下游尽可能远，并且由于临界水压环境可能产生无害排放的暂时性喷溅的地方。
- A filler neck 77 connected to a water inlet 69a of a radiator 69 by a flexible water supply pipe 79 is detachably mounted on an attachment 76 which is swingable with a power unit P. 通过可挠性给水管路79与散热器69的给水口69a连接的接管嘴77，可装卸地安装在与动力单元P一起摆动的被安装部件76上。
- Pound notes have been withdrawn from circulation. 一英镑面值的钞票已停止流通。
- A reversal of normal flow in the system caused by a negative pressure (vacuum or partial vacuum) in the supply piping. 由供应管道内的负压力(真空或部分真空)产生的系统内正常流体的倒流。
- Harvey discovered the circulation of the blood. 哈唯发现了血液循环。
- We observed the circulation of blood in frogs. 我们观察了青蛙的血液循环。
- Reduces risk of damage to water supply piping due to high pressure or pressure surges. 降低水供应管道由于高压或压力波动。
- The old coins have been withdrawn from circulation. 旧硬币已经收回不再流通了。
- Many forged notes are in circulation. 许多假钞在流通。
- This magazine has a large circulation. 这本杂志发行量很大。
