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The ball type paraffin removal unit has low reliability in moving; while the tooth type unit has the disadvantages of teeth being apt to break and causing damage of tubing inwall. 球型清蜡器的主要缺点是运动的可靠性差，一旦钢球丧失锁紧功能，将失去“步进足”的作用；而齿型清蜡器的步进齿易破损及齿尖易刺伤油管内壁。
The working principle, design features and advantages and disadvantages of ball type and tooth type steppiing paraffin removal units are introduced. 介绍了球1型、球2型、齿2?1型和齿4型步进式清蜡器的工作原理、结构特点及优缺点。
Abstract: The working principle, design features and advantages and disadvantages of ball type and tooth type steppiing paraffin removal units are introduced. 文摘:介绍了球1型、球2型、齿2?1型和齿4型步进式清蜡器的工作原理、结构特点及优缺点。
Paraffin removal test in rod pumped wells by stepping paraffin removal unit 步进式清蜡器在抽油机井的清蜡工艺试验
Development and application of paraffin removal unit in pump detection operation 检泵清蜡装置的开发与应用
paraffin removal unit 清蜡设备
The enterprise STUERMANN GMBH CO KG offers among other things Smoke removal unit and Floating wings. STUERMANN GMBH CO kg 是一家令客户满意的工业型企业，该企业生产杰出的烟道装置。
The grit removal unit, grit classifier, air blower No. 1 and 2, and scouring solenoid valve are operated continuously. 搅拌吸砂机,砂水分离机,鼓风机1号,鼓风机2号及冲洗电磁阀连续运行。
The employment and operation experiences of MDEA CO_2 removal unit and existing problems are described in this article. 介绍MDEA脱碳装置的使用情况和运行经验,并对生产中存在的问题进行了探讨。
The latest technologies in paraffin removal and control in foreign countries are briefly introduced, such as paraffin removal by oil well tubing fillup valve, negative pressure shock, in? 简要介绍了国外最新应用的清蜡、防蜡方法,诸如油井油管注入阀清蜡、负压冲击清蜡、井下就地产热清蜡、油井直接电加热清蜡和使杆管表面亲水防蜡等。
In this paper,the arsenic removal unit process in ethylene plant was introduced and the causes which can't continuous run in long period were analysed. 简要介绍了乙烯装置中前脱砷工艺过程，但脱砷装置存在不能长周期连续运转问题，通过原因分析来对这一工艺过程加以探讨研究。
Its application proves that it can prolong the paraffin removing period and reduce the well-flushing times with an apparent economic benefit. 通过实践证明，该种清防蜡剂可延长清蜡周期，减少洗井次数，经济效益显著，值得广泛推广。
After its going onstream it has solved through constant improvement the existing problems in the use of the NHD CO 2 removal unit in the southern region of China. 投产后,通过不断改进,解决了NHD脱碳装置在我国南方地区应用中存在的问题。
paraffin removal with chemical method 化学清腊
Case study for the use of regular packing and new inner parts in carbon dioxide removal unit and cuprammonia unit, as well as related effectiveness and economical efficiency,are introduced. 介绍用新型塔内件和规整填料改造脱碳塔和铜洗塔的技术方案论证、应用效果和经济效益。
Low-pressure small-displacement thermal paraffin removal technique 油井低压小排量热力清蜡技术
The fire blazed up when he added paraffin. 他加了一些煤油，火就燃烧起来了。
Candles are made of paraffin wax. 蜡烛是由石蜡做成的。
Formulation of WH-1 for Paraffin Removal and Inhibition 乳液型清防蜡剂WH-1的研制
The luminous intensity on unit area. 单位面积上的发光强度。