查询词典 string-galvanometer

The method for calculating the axial force, bending moment and bending deflection sucker rod string with centralizer is obtained applying compressionalto - shear buckling continuous beam - string theory- The design method for sucker rod string with weighting rod is presented in this paper, which takes the modified Goodman stress diagram as strength design principle and...

应用纵横弯曲连续梁柱理论得到了求解带扶正器的抽油杆柱的轴力、弯矩和挠度计算公式；以修正的Goodman应力图为强度准则，并考虑杆柱刚度条件，提出了水平井中抽油杆柱加重设计的方法。最后给出了某油田1口井的抽油杆柱设计实例，说明了该万法的正确性。

Working conditions of drilling string is complex underground, various factors ofteninteract, in the process of drilling, drilling string acts complex movement in drill fluid, drillfluid unavoidable corrupt drilling string because such as oxygen, hydrogen sulfide and manysalts are dissolved in it. At the same time, many cyclic stresses act on drilling pipe, such asflexural cyclic stress, torsional cyclic stress.

钻柱在井下的工作状态是复杂的，常常是多种因素交织在一起的，在钻井过程中，钻柱在溶解了氧、硫化氢及各种盐类的钻井液中作复杂运动，不可避免的受到它们的腐蚀作用，同时还要受到弯曲、扭转等交变应力作用。

This paper gives analyses of form-finding for beam string structures and provides an alternative method of lowering temperature of string to find beam string structures' undeformed configuration.

对预应力索－梁结构体系的形状确定问题进行了分析。

The value of a raw string literal is the string composed of the uninterpreted characters between the quotes; in particular, backslashes have no special meaning and the string may span multiple lines.

原始字符串字面值表示的值就是由反引号之间的字符组成的字符串。特别是，原始字符串中反斜杠没有特殊含义，可以跨跃多行。

The directional calculation methods of the string are also supplied on different drawing distribution cases, the segmentation of the adhered string between characters is also realized by calculating the feature vectors of the adhered local string block image and using the iteration approachment algorithm.

提出不同情况下字串的定向计算方法，通过粘连字块的特征矢量计算和迭代计算实现字块的分割。

Therefore, established a finite element Stable response model of a horizontal whole string and carried out t the safety varied frequency of gas well after researched the natural seriously transversal vibration and compressional vibration frequency range of tubing string with packer and packerless, so that it make the tubing string to avert the covibration frequency range of natural gas excited.

本文认为以某井高产量稳产时，天然气对油管柱的外激励为简谐激振，因此研究中建立某水平井全井段油管柱稳态响应的有限元力学模型，并获得了在无封隔器和有封隔器情况下的油管柱发生严重横振和纵振的频率范围，提出了天然气安全调节频率范围，使油管柱避开可能引起严重破坏的天然气激励频率区域。

The influence of the excursion of the mass center of the torsional vibrating system of the three-string pendulum on the measurement of the moment of inertia is analyzed. A criterion for the mass center of the torsional vibrating system to be in alignment with the central axis of the three-string pendulum and a practical method to measure the moment of inertia of a body about a noncentral axis of mass using the three-string pendulum are proposed.

分析了三线摆扭振系统质心偏移对转动惯量测试的影响，给出了扭振系统质心与三线摆中心轴对齐的判别准则和用三线摆测定物体对非质心轴转动惯量的工程实用方法。

Through analyzing the s tressed state of each part of the drill string in borehole,the four main charact eristics and basic reasons of the drill string failure that often occurs and is of general character are analyzed and the feasible,scientific and effective meas ures for preventing these common drill string failure accidents are emphatically proposed in this paper.

文章从分析钻具在使用过程中的受力情况出发，根据钻柱各部位在井内的受力情况，剖析了四种经常发生的、带共性的钻柱失效的主要特征及根本原因，重点提出了比较可行的、科学的预防这几种常发性钻具失效事故的有效措施和看法。

Based on the research of the predecessor's production and the theoretic study, and establishs a mechanics and mathematical model of the horizontal well testing string and optimizes the composition and parts of the testing string. And the plunger effect, spiral bending effect, temperature effect and tympanites effect of the pipe string-packer system are analysed. At the same time, both the model of thermal field and pressure field are studied in accordance with technical peculiarity on site.

本文通过对前人研究成果的调研，建立了水平井测试管柱的力学模型和数学模型，并对测试管柱的结构及配件进行了优化；建立了管柱-封隔器系统的活塞、螺旋屈曲、温度和鼓胀四种基本效应的模型，同时也根据现场工艺特点建立了温度场和压力场的分布模型。

The bow is braced for use by a single string attached directly between the two string nocks, and in operation is held in one hand by its handle while the fingers of the other hand draw, hold back and release the string.

弓由一根直接缚到弓翼两端槽上的弦撑住，一只手握住弓的握把同时另一只手的手指拉弦，继续用力和撒放。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。