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- Some Problems to Be Noted for Using OMNI Reverse Circulating Valve in Well Testing String 在测试管柱中使用OMNI循环阀值得注意的几个问题
- reverse circulating valve 逆循环阀
- A Test and Study for Shear Pin of the Sample of APR-M_2 Circulating Valve. APR-M_2循环阀取样器剪切销钉试验研究
- reverse circulation valve 反循环阀
- According to high price of imported RTTS Hydraulic Circulating Valve, a new set of Hydraulic Circulating Valve usually is developed. 针对进口RTTS液压循环阀价格昂贵的问题,研制出一种新型液压循环阀。
- The procreative blanking plug of the "Y type" pipe string has check valve function and it can conveniently for reverse circulation well cleanup. 型管柱中的生产堵塞器具有单流阀作用,可方便进行反循环洗井;同时,具有独特外泄压系统,使堵塞器打捞在压力平衡状态下进行,且密封可靠,保证所取资料的准确性。
- Cooperated with RD safety circulating valve, it can entirely take the place of APR-M2 tool with the character of accurate sampling,reducing construction period,simple and safe sampling etc. 与RD安全循环阀配合使用,完全可以替代APR-M_2工具,具有取样准确、缩短施工工期,取样过程简单、安全等特点。
- reversible circulation valve 双向循环阀
- According to the exploration problems in an open-pit mine,a new drilling method using reverse circulation DTH hammer drill is put forward. 针对露天矿钻探施工中存在的问题,提出了利用贯通式反循环潜孔锤进行施工的新方法。
- The drill can be used in the drilling technologies of normal or reverse circulation in the quaternary period gravel or hand rock ground. 演练中，可用于钻井技术的正常或反循环在第四纪时期，砾石或手岩石地面。
- Barge was used in sea pile construction,and FGC-15D large diameterwet reverse circulation DTH was adopted for hole completion. 利用驳船进行海上基桩施工，采用FGC-15D型大直径湿式反循环潜孔锤钻进成孔，满足施工工艺和工期要求。
- The paper introduced the use of airlifting reverse circulation rotary drilling techniques in practice of major diameter socket pile operation at Xiangfan city s Hanjiang No. 介绍了使用泥浆护壁气举反循环回转钻进工艺进行襄樊汉江四桥大口径嵌岩桩的施工实践。
- The special reverse circulation swivel that matches with the improved shaft is developed.The construction and application of the swivel are introduced in this paper. 本文介绍了所设计的反循环水龙头的结构组成及其现场使用情况。
- Manufacture and improvement on self-propelled direct and reverse circulation construction drill is introduced with the main technique parameter,specification and pilot production. 介绍了自走式正反循环工程钻机的研制改进概况以及主要技术参数、性能特点、生产试验情况等。
- He gave away his books to a circulating library. 他把自己的书籍损赠给一家循环图书馆。
- Abstract: Rig GFC - 120 is a kind of self moving reverse circulation rotary rigs.It is mainly used to drill side foundation holes and small water wells. 中文摘要: GFC-120型钻机为自走式动力头回转反循环钻机，用于降水井和护坡桩基础孔以及小型水井的施工。
- Rumours are circulating in Whitehall. 怀特霍尔街上流传著谣言。
- This machine adopts two species of drillingtechnique of direct and reverse circulation, the efficiency enhances observably in the process of ovum, gravel and rock layer construction. 该机可采用正反循环两种钻进工艺，在卵、砾、岩层施工中，效率显著提高。
- Our army suffered a slight reverse. 我们的部队受到轻微的挫败。
- The 50p coin has a crowned lion on its reverse. 50便士硬币反面的图案是个戴皇冠的狮子。
