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- Under the action of variation magnetic field,the permanent magnet moving-coil drives the plunger pump to move up and down and lift oil up to ground. 通过动力电缆给井下直线电机供电后产生交变磁场,永磁体动子在交变磁场作用下带动泵柱塞上下往复运动,从而达到举升抽油的目的。
- It shows the presence of a magnetic field. 这表明有磁场存在。
- variation magnetic field 变化磁场
- Variation of Damping Properties Under Magnetic Field and Shear Strain Amplitude in Fe-Cr-Al Alloys. 高阻尼Fe-Cr-Al合金在磁场和应力场下的阻尼行为
- Can Magnetic Field Drill through a Piece of Iron? 磁场能穿过铁片吗?
- The string is in a magnetic field. 振动弦处于磁场之中。
- The force exerted by a magnetic field. 力由磁场施加的力。
- The lines of force of a magnetic field. 磁力磁场的磁力线
- This paper introduces the formation of magnetic field, polarity reversal, secular variation and the use of geomagnetic polarity reversal or susceptibility in stratigraphic study. 摘要本文介绍了地球磁场的成因、极性变化以及运用极性倒转划分对比地层和指示环境。
- The variation must in a swimming pool will soon diffuse throughout the pool, a Concentration of magnetic field lines diffuses throughout the planet's outer core. 与游泳池中一滴有色的染料在池中迅速扩散的方式一样,一个浓缩的地磁场曲线的扩散遍布地球的外核。
- The variation must in a swimming pool will soon diffuse throughout the pool,a Concentration of magnetic field lines diffuses throughout the planet's outer core. 与游泳池中一滴有色的染料在池中迅速扩散的方式一样,一个浓缩的地磁场曲线的扩散遍布地球的外核。
- The secular magnetic field variation in the south Atlantic anomaly (SAA) regionis studied by using the international geomagnetic reference field (1990s) model. 利用国际地磁参考场模型IGRF90,分析了南大西洋异常(SAA)区磁场变化的特征,计算了低轨卫星轨道积分粒子辐射通量及其随年代的变化。
- The class of phenomena exhibited by a magnetic field. 磁性磁场显示的一组现象
- The current in the conductor sets up a magnetic field. 导体里的电流形成一个磁场。
- A third radiation group was unaffected by the magnetic field. 第三组射线不受磁场的影响。
- The magnetic field of the earth creates a torque around the pivot. 地球的磁场在支点周围产生一个转矩。
- We might put the current-carrying wire in a magnetic field. 我们可将载流导线置于磁场中。
- The geometric mean (GM) and geometric standard deviation (GSD) were calculated to represent summary indicators of the intensity and variation of the magnetic field in each home. 吾人计算几何平均数与几何标准差来代表每一个家户内磁场的强度与变异性,并进行全体样本家户间磁场强度与变异之描述性统计。
- Don't bend or stain and avoid magnetic fields. 不要弯折、污损,并避开磁场。