In order to minimize oil vapor migration, some lyophilizers are designed with a tortuous path between the vacuum pump and chamber.
为了最小化油蒸汽的回流，一些冻干机在真空泵和前箱间设计了弯曲的管路。
In many developed countries, such as America, Japan, conventional oil vacuum pump has been replaced by dry screw vacuum pump in more and more fields.
在欧美和日本等发达国家，螺杆型干式真空泵在很多领域已经越来越多的代替了传统的有油泵。
This sophisticated mechatronics products, in a vacuum apart from the application of molecular pump, but also the military, aerospace, oil, petrochemical, energy and other areas has broad prospects.
这种精密的机电一体化产品，除了在真空分子泵中应用外，还在军工、航天航空、石油石化、能源等领域有着广阔的前景。
Gonghua brand series diffusion pump oil is the work fluid used by metal diffusion pumps and glass diffusion pumps in the process of vacuum pumping.
巩华牌系列扩散泵油是金属扩散泵及玻璃扩散泵真空抽气时使用的工作液。
Vacuum pump oil window parts Yaoliu Chu also excluded from the appropriate gap.
真空泵油窗部位也要留出适当的空隙排除废气。
There are three major processes in light oil tank truck unloading, namely vacuum pump unloading, submerged pump unloading, and slide pump unloading.
轻油罐车卸槽工艺主要有真空泵卸槽法、潜油泵卸槽法和滑片泵卸槽法。
One of the 4 items decided at the vacuum trade meeting in 1974 was to raise the pumping speed of oil booster pump following the raise of sucking pressure.
1974年真空行业会议确定四大攻关项目之一是油增压泵对应高吸入压强提高抽速。
Field application shows that an immersible pump method is the most ideal method for the oil vacuum unloading system of rail tank wag.
实践表明，卸槽潜油泵法是火车槽车负压卸油系统改造的最理想方法。
The choice and application of the general vacuum pump oil are described, a reference is given to the user, service workers, works and sales departments in the article.
介绍常用真空泵油的选择考虑和应用实例，供用户、有关厂商和维修人员参考。
Vacuum pump is a relatively sophisticated equipment, it's working medium is a special high boiling point, low-volatile oil pump, its effectiveness depends on the mechanical pump and pump oil quality.
真空油泵是一种比较精密的设备，它的工作介质是特制的高沸点、低挥发的泵油，它的效能取决于油泵的机械结构和泵油的质量。
Then the view is not large, to choose a pump, plus some oil purification measures, such as the Canadian cold trap, baffle, retaining the oil wells, but also in order to reach a dirty vacuum.
那末务求不宽大，能够取舍有油泵，加上一些防油净化措施，如加冷阱、障板、挡油阱等，也能达成肮脏真空务求。
As there were leak on contact place between shaft and rotor body in built up hollow rotor, dropping discharg gas speed of pump and efficiency applied of oil sealed sliding vane rotary vacuum pump.
组合式空心转子由于轴头与转子体之间的结合面存在着渗漏，使泵的抽气效率性能下降，从而影响其在应用中的效率。
The oil sealed sliding vane vacuum pump is one of basic vacuum production equipments, wide application and more requirement.
油封式旋片真空泵是真空技术中最基本的真空获得设备之一，应用面广而量大。
Three major oil unloading methods used in tank trains are introduced. They are vacuum system, sliding vane pump, and submersible pump unloading.
介绍了轻油铁路卸车主要采用的三种方式，即真空系统接卸、滑片泵(转子泵)接卸和潜油泵接卸。
In the unloading process of light oil of tank car, the auxiliary unloading system of light oil pump controlling room is used to substitute the current vacuum unloading system.
在铁路轻油罐车装卸工艺中，采用轻油泵房辅助卸油装置可以替代现有泵房工艺流程中的真空系统。
The series of F80 Oil free Piston Vacuum Pump, characterized as compact appearance, low noise, durability and maintenance free, has passed the ISO-9001 Quality System Authentication.
F80系列无油活塞式真空泵，具有体积小、重量轻、噪声低、免维护、高寿命的优点，产品通过ISO- 9001质量体系认证。
The paper analyses the unreasonable process of vacuum system of pump house. It also put forward the constructive Suggestions with regard to strengthen the process management of oil depot.
对油泵房真空系统不合理工艺进行了剖析，并就加强油库工艺管理提出建设性意见。
KT-400 high vacuum oil diffusion pump, which is characterized by extreme high vacuum, pumping speed large, increase production efficiency while the vacuum pneumatic valves with automatic control.
KT- 400高真空油扩散泵，它的特点是真空极限高，抽速大，提高生产效率，同时真空气动阀门采用自动控制。
But, for the PAG oil, because special vacuum pump is used, the dimensions and weight of the equipment is different from the above.
但是，因为PAG油使用的是特殊的真空泵，所以外形尺寸和质量不同于上表。
Sales, including the oil, no oil screw and centrifugal compressor, all kinds of air compressor, vacuum pump.
销售包括微油、无油螺杆式及离心式空压机在内的各式空压机、真空泵。
The flame-proof oil and gas recovery vacuum pump has the advantages of small volume, 40%smaller than an oil and gas recovery vacuum pump of the same flow which is provided with a motor.
本实用新型的优点是体积小，它的体积比同流量自带电机油气回收真空泵小百分之四十；
The flame-proof oil and gas recovery vacuum pump has the advantages of small volume, 40%smaller than an oil and gas recovery vacuum pump of the same flow which is provided with a motor.
本实用新型的优点是体积小，它的体积比同流量自带电机油气回收真空泵小百分之四十；
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