查询词典 gravitational field

In view of corrosion phenomenon occur on the pipeline of oil field, this thesis studied three kinds of anticorrosive pipelines which were used in the construction of oil field.

针对油田管道的腐蚀现象，本文研究了油田地面工程中三种防腐性能优良的管道。

The low-level wind field displayed cyclonic character on the north part of the squall line, whereas on its south part the wind field pattern was anticyclonic, with clear convergence of westerly and southeast inflows in between.

飑线不同位置的水平风场结构有很大不同，在飑线北端，低层是气旋性辐合风场，飑线南端是反气旋性辐合风场，而中部沿强对流窄带的前部是偏西和东南风的风场辐合。

Two types of assumed disturbances are considered:(1) the perturbed field is almost uniform in the direction antiparallel with the dipole's axis,(2) the perturbed field is originated from a ring current situated between 5 to 8 earth radii on the equatorial plane.

地磁扰动我們分別取以下两种形式：(1)当扰动磁場是均勻的而且其方向与磁軸相反；(2)当扰动磁場是由位于赤道面上5至8个地球半径的电流环引起的。

One of the electric field sensing transmission electrodes (36) is driven with an alternating voltage (130) comprising at least some antiphase portions, for example an inverted signal, in comparison to an alternating voltage (120) with which the other electric field sensing transmission electrode (34) is driven.

其中一个电场感测发射电极(36)由交变电压(130)驱动，与用于驱动另一个电场感测发射电极(34)的交变电压(120)相比，交变电压(130)包括至少某些反相位部分，例如反相的信号。

In this paper,in consideration of air medium inside the hole defects acting on the electric field, a coupled field of antiplane strain problem for the piezoelectric material with an elliptic hole is analyzed with an expression for potential function of complex veriable in Faber series.

考虑椭圆孔内空气介质对电场的作用，用复变函数的Faber级数展开方法，分析了含椭圆孔的压电材料反平面应变问题的耦合场，给出了问题的精确解。

Results/Conclusion Their complex potential expressions of matrix of piezoelectric/piezomagnetic composites are derived, and the evidence for energy release rate of piezoelectric/piezomagnetic composites under the combined action of antiplane shear and inplane electrical field and magnetic field is provided.

结果／结论给出了压电压磁弹性复合材料基体的复式表达式，并为计算受反平面剪切和平面内电场、磁场共同作用下的压电压磁复合材料能量释放率提供依据。

Sichuan gas field is the typical sour gas field of our country,which corrosion and antisepsis problem of equipments and pipelines have been an important research topic.

四川气田系我国典型的含硫气田，设备及管道的腐蚀与防腐问题一直是一个重要的研究课题。

We calculate the field distribution near focus of an aplanatic system for incident ASPBs with different polarization orders and initial azimuthal angles, and based on the simulation results, we find some unique focusing properties of the beams, such as ever on-axis energy null, strong longitudinal field, and flowerlike intensity distribution at focus.

计算了不同偏振级次和偏振初始角的轴对称偏振光束当入射到无球差系统时在焦点附近的场分布，通过这些模拟结果，发现了该光束一些独特的聚焦特性，例如光轴强度始终为零、具有较强的轴向光场以及在焦点附近场呈现花瓣状分布等。

If the apparent field of view is known,''' the actual field of view can be calculated from the following approximate formula

如果已经知道视视野，'''实视野可以经由下面的近似公式计算

Discarded soil field is a common damaging appurtenant project outside the route in highway construction in mountainous areas,the destructive effect of which on environment has been validated by years of highway construction. The design of discarded soil field should consider the natural,geographic,geological and social condition such as climate,landform,hydrology,hydrographic geology,engineering geology and so on.

弃土场是山区公路建设中经常出现的具有破坏性的线外附属工程，它对环境的破坏在多年的公路建设中已经得到了验证，故弃土场的设计应全面综合地考虑场区的气候、地形、水文、水文地质和工程地质等自然、地理、地质和社会条件。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。