The direction of the earth's magnetic pole, to which the north-seeking pole of a magnetic needle points when free from local magnetic influence.
地球磁极的方向，当不受当地磁场影响时，用来寻找北方磁极指示的方向。
For a typical magnetic needle, the initial signal peak became proportional to the velocity step after a threshold value of velocity was over taken.
对某个特定磁探针来说，其初始信号峰值与速度成正比的条件是速度大于某个阈值。
On the point of an upright needle he laid horizontally a fine steel bar, which could turn to the right and left like the magnetic needle in a compass-box..
他在一根垂直的针头顶点，设置了一根水平的钢制细棍，它可以左右转动，就像罗盘里的磁针那样。
The action of the negative pole of a magnetic needle is just as real as the action of the positive pole. To decline is to accept — the other alternative.
一根磁针阴极的作用和阳极的作用都是一相真实的；拒绝也是一种接受——这些都是二中择一的选择。
In radiofrequency ablation, imaging techniques such as ultrasound, computed tomography (ct) or magnetic resonance imaging (MRI) are used to help guide a needle electrode into a cancerous tumor.
在射频消融术中，通过诸如超音波，电脑断层扫描(CT)或磁共振成像(MRI)来帮助指导一个电极针进入癌肿瘤内部。
Conclusion Magnetic plum-blossom needle composite treatment has a marked effect on BPH and it is a new safe and effective treatment for BPH.
结论梅花磁针综合疗法治疗BPH疗效满意，是一种安全有效的新疗法。
Pedal sensor is designed for speed adjustment and synchronizer using magnetic sensors is designed for needle positioning.
同时设计脚踏板调速器实现调速功能，并设计基于磁性传感器的机头定位器实现上下停针功能。
The introduction of the magnetic field made the average crystallite size of needle coke decrease, graphite-based performances improve, density increase and transmittance reduce.
磁场的引入，使得针状焦的平均微晶尺寸降低、石墨化性能提高、致密度增大、透光率降低。
While the magnetic field surrounding a current-carrying wire is indeed interesting, it is quite weak for common amounts of current, able to deflect a compass needle and not much more.
当磁场围绕着带电导线时会有很有趣的现象发生，通常所用的电流产生的磁场相当的弱，最多可以使指南针的指针发生偏转。
While the magnetic field surrounding a current-carrying wire is indeed interesting, it is quite weak for common amounts of current, able to deflect a compass needle and not much more.
当磁场围绕着带电导线时会有很有趣的现象发生，通常所用的电流产生的磁场相当的弱，最多可以使指南针的指针发生偏转。
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