中杆

This paper introduces the research results of techniques of testing PC pump oil well through one-year efforts. Which covers the mathematical models of a number of force characteristics strength analysis, and resonance critical problems of rotation rod-string in PC pump wells: resulting of testing method of polish-rod load and rotation rate on the basis of feasible demonstration and technical requirement analysis; study and manufacture of system of testing PC pump well, which involves sensor, collector ring, acquisition circuit and computer; research and determination of assistant technology of testing force on rotation polish-rod and formulation of testing force on polish-rod. A spot testing has been carried out by means of the above research fruit and good results have been achieved.The success testing results in has laid a strong foundation for the oil well diagnosis.

本论文介绍了对螺杆泵采油井的研究成果，其内容包括，对螺杆泵采油井中的旋转杆柱的若干受力特征、强度分析方法及共振临界问题进行数学建模；在可行性论证和技术需求分析的基础上，研究产生了对油井进行光杆负载和旋转速度测试的办法；研究制作了螺杆泵采油井测试系统，它包括传感器、集流环、采集电路和计算机等；研究确定了对实施旋转光杆测力的辅助工艺；制定了对光杆受力进行测试作法，利用以上研究成果实施了现场测试，并取得了理想的结果。

The theoretical and computational results show that an important reason resulting in eccentric wear of the inner cylinder and the pumping rod lies in the nonuniformity of the stress distribution on the outwall of the inner cylinder which yields excentralization effect of the pumping rod when swabbing fluid flows in eccentric annuli with the pumping rod moving axially in a well.

在实验上，通过不同重量百分比浓度的HPAM水溶液在内管做轴向往复运动的偏心环空中非定常流实验，把由理论公式算得的时间平均流量与实验中测得的时间平均流量做了比较，验证了本文数值计算幂律流体在内管做轴向往复运动的偏心环空中非定常流方法的正确性；上述的理论与计算表明，抽油机井杆管偏磨的一个重要原因是，在聚驱工况下，抽汲液体在抽油杆做轴向运动的井筒中流动时，抽汲液体作用在抽油杆外壁上的压力分布的不均匀性所引起的抽油杆在井筒中的偏心效应。

The present invention includes guide shaft connected to universal shaft coupling; small box and large box clearance fitted with and fixed to the guide shaft; support rod with one end connected to the notched blocks inside the small box and large box and the other end connected to the roller and the sensor; and sensor fixed onto the installing frame and compression spring set inside the large box; and all these together with the pipe constitute one umbrella-shaped structure.

本发明导向轴与万向联轴节固定联接，小箱体、大箱体与导向轴是间隙配合，并在导向轴固定；支承杆一端联接于小箱体与大箱体中的凹形块，另一端与滚轮联接；传感器固定于传感器安装架上，压缩弹簧设置于大箱体中；支承杆一端与小箱体、大箱体中凹形块联接，另一端与滚轮、传感器安装架联接，支承杆沿半径方向圆周均匀分布，与小箱体、导向轴和管道组成一个伞式结构，支承杆与大箱体、导向轴和管道组成另一个伞式结构。

Chicken IL-15(ChIL-15), Which was discovered in 2001, plays a main role in activating NK cells and CD8+ memory T cells, and may therefore have potential as a vaccine adjuvant.According to published ChIL-15 gene sequence, a pair of primers were designed and synthesized to clone ChIL-15 cDNA from ConA-activated chicken splenocytes by RT-PCR. Recombinant plasmid pUC19ChIL-15 carrying the ChIL-15 gene was constructed. The gene encoding mature ChIL-15 (mChIL-15) was amplified from pUC19ChIL-15 by PCR and cloned into pMD 18-T vector. After digested with Kpn I /Pst I , the mChIL-15 gene was subcloned into prokaryotic expression vector pPRoEX橦Ta and transformed into E.coli DH5a .The transformant was induced by IPTG, and the recombinant ChIL-15(rChIL-15) was expressed as a fusion protein with a histidine hexamer tag at the N-terminal end of the protein. Following expression, the protein was purified by ProBond?Nickel-Chelating Resin. The uninduced and induced protein lysates and the purified protein were separated by SDS-PAGE and transferred onto nitrocellulose membrane to identify rChIL-15 by Western blot. The rChIL-15 was used to immune the guinea pig to obtain rChIL-15 polyclonal antibody.

参考已发表的ChIL-15基因序列，设计合成引物，应用RT-PCR技术从刀豆球蛋白A活化的白来航鸡脾淋巴细胞中克隆ChIL-15 cDNA，将其与SmalⅠ酶切处理的pUC19载体连接，构建重组质粒pUC19ChIL-15；用PCR技术从pUC19ChIL-15中扩增出去信号肽的成熟ChIL-15(mChIL-15)基因，与pMD 18-T载体相连构建重组质粒pMDChIL-15；然后用KpnⅠ／PstⅠ双酶切下mChIL-15基因片段，定向亚克隆到经同样酶切处理的带有6个组氨酸标签的表达载体pP_RoEX~HTa中，构建重组质粒pP_RoChIL-15，对其测序确认读框正确后，转入大肠杆菌DH5α中诱导表达并进行纯化，用重组ChIL-15(rChIL-15)免疫豚鼠，制备多克隆抗体；再用HindⅢ／PstⅠ从质粒pP_RoChIL-15上切下mChIL-15基因，定向亚克隆到经同样酶切处理的杆状病毒转移载体pMelBacB中，经酶切、PCR和序列测定鉴定后，与杆状病毒线形化DNABac-N-Blue~(TM DNA共转染Sf9昆虫细胞，经三轮蚀斑纯化，构建重组杆状病毒rBac-ChIL-15，用该重组病毒感染处于对数生长期的Sf9细胞，按不同的时间收取样品，离心后对其上清和沉淀进行SDS-PAGE和Western blot分析。

In the truss , the truss chord is composed of the outer bar, including the winding lever and the chords, connected chords bar called the ventral ...

在桁架 中，弦杆是组成桁架外围的杆件，包括上弦杆和下弦杆，连接上、下弦杆的杆件叫腹。。。

The new shredding mechanism is in installs a cylinder knife under the horizontal-type stripper roller, there is a cut knife at the front of the cylinder knife, after the corn stem enters the gap between stripper roller, is cut off by the knife .When the stripper roller is working, it picking the corn cob, at the same time it take the corn stem into the cylinder knife, the corn stem is cut off by the knife, then the corn stem that has been cut off is thrown out by the cylinder knife.

新装置基于背负式穗茎兼收玉米联合收获机设计，原理是在每对卧式摘穗辊的下方安装一个滚筒刀，在滚筒刀的前端安装有割断刀，当玉米茎杆进入摘穗辊间隙后被割断刀打断，摘穗辊进行摘穗工作的同时将已被打断的玉米茎杆喂入到滚筒刀中切碎，切碎后的茎杆被滚筒刀抛送到茎杆收集装置中。

Each time after putting to (the instrument with the set of Yamshidi-Nadel provided by Kypho of America for injection of bone cement into the vertebrae; each putting could contain about 1.5 mL bone cement) inject bone cement into the vertebrae, the pressure P was not very high, with 500 kPa bar below for majority and the effect caused showed a significant statistical difference (P.01). Whereas, the pressure within the area of the vertebral P value was not high either, the majority was 10.00 Unit lower, which also led to the effects of significant difference (P.01). Both two states showed partial distribution. After making the statistical analysis to the casual two puttings between the first, second, third and fourth putting of each vertebrae, there existed the general differences. The differences were also found between other puttings (a.0083) on the statistics basis apart from between the first and second and between the third and fourth.

结果 每个椎体的椎体成形术均达到临床评价要求，每次推杆（美国Kypho公司提供标准椎体成形术中Yamshi-Nadel套系中推注骨水泥入椎体的器具，每具推杆可容纳骨水泥约1.5mL）推注骨水泥入椎体时所产生的椎体内的压力P不是很高，多数在0.50 bar以下，其所导致的效应具有显著的统计学差异(P.01)，而每次推杆推注骨水泥入椎体时的椎体内压力面积值P也不是很高，多数在10.00 Unit以下，其所导致的效应具有显著的统计学差异(P.01)，两者均呈偏态分布；而且，对每例椎体的第一、二、三、四杆之间两两予以统计学上的分析，在总体存在差异有统计学意义的基础上还发现除第一和二杆、第三和四杆之间外，其他各杆之间存在着差异(a.0083)。

Apply to industrial worm gear lubrication. L-CKE compound for the worm oil, mainly for copper - a pair of steel-and two-cylinder, and other types of siege under light load, in a smooth drive without the impact of the worm, deputy. L-CKE / P worm extreme pressure for oil, mainly for copper - a pair of steel cylindrical heavy to bear, there is vibration in the transmission and impact of the worm, deputy.

适用于工业蜗轮蜗杆传动装置的润滑。L-CKE为复合型蜗轮蜗杆油，主要用于铜－钢配对的圆柱型和双包围等类型的承受轻负荷、传动中平稳无冲击的蜗轮蜗杆副。L-CKE/P为极压蜗轮蜗杆油，主要用于铜－钢配对的圆柱型承受重负荷，传动中有振动和冲击的蜗轮蜗杆副。

At the points where planet gear starts engaging with worm gear or separating from worm gear, oil film thickness are bigger. And the oil film thickness is the minimum at throat part of worm gear.

蜗杆中最小油膜厚度分布情况与定子中类似，在行星轮开始与蜗杆接触及即将与蜗杆分离时较大，在蜗杆喉部最小油膜厚度最小。

The main content of this thesis includes the following parts:(1) In Chapter 2, the conditions of link lengths are derived for the side bars to rotate as cranks. Two types of cranks are defined and then five-bar linkages are divided into four types, i.e.

本文主要做了以下几方面的工作：(1)在第二章中，先导出五杆机构两连架杆可整周转动的杆长条件，并根据曲柄的存在情况，对五杆机构进行分类，即把五杆机构分成全曲柄机构、双准曲柄机构、双摇杆机构和准曲柄-摇杆机构四种类型。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。