查询词典 potential difference

Keywords well logging instrument;cased hole formation resistivity logging;apparent resistivity;error analysis;second order potential difference

测井仪器；过套管电阻率测井；视电阻率；误差分析；二阶电位差

The result shows that the mixed boundary condition can greatly reduce the calculation area without affecting accuracy of the solution.It is followed by the higher accuracy of Dirichlet boundary condition which makes the boundary error greater when measured points is near the boundary, so we must take a sufficiently large border region.The homogeneous boundary condition has relatively large error, but the use of non-triangle poles devices makes apparent resistivity calculation error become small, because of elimination of the effect on potential difference for the infinite boundary. In inversion, in order to save computing time, homogeneous boundary conditions are often used to perform finite element forward calculation.

结果表明，混合边界条件精度最高，可大大缩小求解区域而不影响计算精度，其次是Dirichlet边界条件精度较高，但测点越靠边界误差会越大，必须取足够大的边界区域，齐次边界条件的误差比较大，但如果采用非二极装置，通过电位差计算得到的视电阻率，由于无穷远边界对电位差的影响基本消除，视电阻率计算误差与混合边界条件下的接近，在反演中，为了节省计算时间，经常使用齐次边界条件进行有限元正演。

Cased hole formation resistivity logging calculates apparent formation resistivity by measuring slight potential difference on metal casing,its measurement error of the apparent formation resistivity is decided by the measurement error of the potential difference on the casing.

过套管电阻率测井通过测量金属套管上的微小电位差来计算地层视电阻率，套管上电位差的测量误差决定了地层视电阻率的测量误差。

Results of cyclic potentiodynamic polarization curve measurement showed that the manufacture of NiTi and stainless steel wires had a significant influence on the breakdown potential, potential difference between breakdown and protection potential, and passive range.

循环动电位极化曲线量测结果显示，镍钛及不锈钢线的厂牌对其崩溃电位、崩溃电位与保护电位差值及钝态区范围均有显著影响；环境的pH值对镍钛及不锈钢线的钝态区范围也有显著影响。

In the absence of a large enough electric potential difference across the LED leads, the junction presents an electric potential barrier to the flow of electrons.

在缺乏一个足够大的电势差全国率领的线索，交界处提出了一种电动势垒，以流动的电子。

In heat transfer by conduction an convection,the potential difference is the temperature difference.

在热传递上由传导对流，电位差是温度区别。

Objective To study the value of condensation and rarefaction clicks evoked action potential latency difference in diagnosis of Meniere′s disease.

目的 探讨疏波和密波短声诱发的动作电位（action potential，AP潜伏期差对梅尼埃病的诊断价值。

In CV graphs and DPV graphs, the summit current of oxidoreduction electric potential is decreased significantly and the oxidoreduction electric potential difference is increased relatively. This means the DNA of 4 Rhododendrons interact with Co 〓.

CV图和DPV图中大小两对氧化还原峰峰电流明显下降，氧化还原峰电势差增大，显示几种杜鹃DNA都与Co〓发生了相互作用。

The gating of PMT was realized with the method of adding the applied gating and gain-control nano-second pulse, and by changing the electric potential difference between the cathode and the first dynode. The gain control of PMT was complemented by the aid of adding the high voltage pulse to the last dynode of PMT to change the electric potential difference between the last dynode and front dynode.

采用给PMT外加选通和变增益纳秒电脉冲的方法，通过改变PMT光阴极与第一打拿极之间电势差，实现PMT选通；借助给PMT最后一个打拿极外加变增益高压脉冲改变PMT最后一个打拿极与前置打拿极间的电势差，实现PMT变增益。

The relations between the potential difference and the discharging time when the discharge current is a step function as well as a step function containing high frequency vibrations, the relations between one-dimensional and two-dimensional spark locations and potential difference based on the thin wall model and the thick wall model have been studied.

仿真研究了放电电流为阶跃函数以及含高频振荡时电位差与放电时间的关系；基于薄壁模型和厚壁模型，仿真研究了电极下表面一维放电点位置和二维放电点位置与电位差的关系；对于确定的电位差，仿真研究了放电点位置的分布情况，说明两点输入不能唯一地检测出放电点位置，从而引入四点输入检测的思想。

But in the course of internationalization, they meet with misunderstanding and puzzlement.

许多企业已经意识到了这一点，但在国际化的进程中，仍存在一些误区与困惑。

Inorder toaccomplish this goal as quickly as possible, we'll beteamingup with anexperienced group of modelers, skinners, and animatorswhosenames willbe announced in the coming weeks.

为了尽快实现这个目标，我们在未来数周内将公布与一些有经验的模型、皮肤、动画制作小组合作。