您要查找的是不是：
- A long, slender, flexible rod having a tuft or sponge at the end, used to remove foreign bodies from or apply medication to the larynx or esophagus. 除鯁器，食管探子纖細而可彎曲的長(cháng)圓棒，其一端有一小片海綿或毛撮，用來(lái)去除喉部或食管的外來(lái)異物或給喉部或食道上藥
- An instrument, either a flexible rod or a flexible thong or lash attached to a handle, used for driving animals or administering corporal punishment. 鞭子一種用具，一個(gè)富有彈性的棍棒或是彈性好的系于一個(gè)手柄的皮帶，用以驅趕動(dòng)物或進(jìn)行身體懲罰
- This paper introduces a modified Gibbs wave equation, and considers the effect of connection on commingling rod string. 本文對吉布斯波動(dòng)方程做了一些修正，考慮了接箍對混合桿柱的影響，推導出新的方程。
- The recommendation about anti-dropout of rod string in Zhoucheng Oilfield is also prese... 文章還提出了洲城油田下步工作建議。
- A long,slender,flexible rod having a tuft or sponge at the end,used to remove foreign bodies from or apply medication to the larynx or esophagus. 除鯁器，食管探子纖細而可彎曲的長(cháng)圓棒，其一端有一小片海綿或毛撮，用來(lái)去除喉部或食管的外來(lái)異物或給喉部或食道上藥。
- Stabilization and antifriction of the rod string in horizontal hole are of great importance. 水平井用桿式泵采油時(shí),抽油桿柱的扶正和減摩是一個(gè)重要的研究課題。
- A long, slender, flexible rod having a tuft or sponge at the end, used to remove foreign bodies from or apply medicationto the larynx or esophagus. 除鯁器,食管探子纖細而可彎曲的長(cháng)圓棒,其一端有一小片海綿或毛撮,用來(lái)去除喉部或食管的外來(lái)異物或給喉部或食道上藥。
- A long. slender, flexible rod having a tuft or sponge at the end, used to remove foreign bodies from or apply medication to the larynx or esophagus. 除鯁器，食管探子纖細而可彎曲的長(cháng)圓棒，其一端有一小片海綿或毛撮，用來(lái)去除喉部或食管的外來(lái)異物或給喉部或食道上藥
- The rod string dynamics model including the influences of rod-fluid-tubing viscous friction and rod-tubing Coulomb friction is developed. 在建立定向井有桿抽油系統的預測數學(xué)模型時(shí) ,計入了桿液管粘性摩擦和定向井井斜造成的桿管庫侖摩擦 ,同時(shí)考慮了實(shí)際泵況對系統的影響。
- The new device uses a rotary mechanism similar to ball joint to eliminate the unscrewing torque caused by the reciprocating motion of the rod string. 這種裝置采用類(lèi)似球形關(guān)節的旋轉機構，消除了抽油桿柱上下往復運動(dòng)產(chǎn)生的倒扣扭矩；
- A three-dimensional dynamic simulation model of rod string in actual borehole was established based on the characteristics of actual well track and system dynamics theory. 根據實(shí)際井眼軌跡的特征及系統動(dòng)力學(xué)理論建立了抽油桿柱在實(shí)際井眼中的動(dòng)態(tài)仿真模型。
- The forces on the rod string in slant stralght holes is different for that in stheight holes, therefore the calculationof the antishock sboke is different. 斜直井中抽油桿柱受力狀況不同于直井，故其防沖距的計算也不同于直井。斜宜并檢泵作業(yè)碰泵時(shí)，抽油桿柱由于重力作用在油管內呈螺旋狀彎曲。
- According to the calculating equations of the friction load on the rod string on the upstroke and downstroke, the friction load increases remarkably with the increa... 孤東油田八區部分見(jiàn)聚油井摩擦載荷的計算值與實(shí)測值的實(shí)例對比表明,二者的數值差距很小,表明計算方法可行。
- When using the mechanical recovery method with sucker rod pump in directional and horizontal wells,it needed install to centralizer on sucker rod string. 在定向井、水平井中使用有桿泵機械采油方法時(shí),需要在抽油桿柱上安裝扶正器。
- Optimization and application of flexible sucker rod string 柔性抽油桿柱的優(yōu)化設計及應用
- In contrast to conventional centralizers screwed on sucker rod, new-type centralizers have several advantages of simple structure,ease use, less cost and any positions spaced on the rod string. 它相對接頭連接式抽油桿扶正器具有結構簡(jiǎn)單、成本低、易于安裝使用,能夠根據生產(chǎn)需要布置在抽油桿柱任意位置的特點(diǎn)。
- Coiled flexible rod and accessory techniques 連續柔性抽油桿采油配套技術(shù)及應用
- In the light of the frequent breaking of the rod string in a surface driven screw pump well, the force condition of the string in the well is analyzed by means of the elastoplasticity theory. 針對井口驅動(dòng)螺桿泵抽油桿柱斷脫頻繁的問(wèn)題，應用彈塑性理論分析了抽油桿柱在井中的受力狀況。
- I need a piece of string to tie this parcel up. 我需要一根細繩把這包裹扎起來(lái)。
- The causes of abrasion of sucker rod string and tubing string aie analyzed, and it is indicated that the effective measure for preventing the abrasion is using sucker rod centralizers. 分析了油管和抽油桿產(chǎn)生偏磨的原因，指出防止油管和抽油桿偏磨的有效措施是采用抽油桿扶正器。
