That would be given by a vector field that points toward the origin and whose magnitude is inversely proportional to the square of a distance from the origin.
力场由一个指向原点的向量场给出，并且此向量场的大小，与其到原点的距离的平方成反比。
The interplanetary magnetic field fluctuates greatly in magnitude and direction.
行星际磁场在不同的星等和方向强度差别很大。
With the field model, the electrostatic field distribution were observed and the magnitude of the charged quantity is determined by electron holography.
采用这个模型，能用电子全息法观测由该点电荷所形成的静电场分布及荷电量的大小。
A CCS facility at the Sleipner gas field in the North Sea, may have triggered a magnitude 4 earthquake in 2008.
他是加利福尼亚地质灾害顾问公司的地球物理学家。 一家位于北海Sleipner油田的碳处理工厂，有可能引发2008年一场四级地震。
The magnitude and direction of this magnetic flux can be controlled in agreement with the magnitude and direction of the field current.
改变励磁电流的大小和方向可以控制直流磁通的大小和方向。
To set the magnitude of the faintest star which appears on the map, change the value in the Limiting magnitude field.
要设置星图上显示的最暗恒星的星等，就在极限星等区域更改数值。
The results show that the missile rotation has hardly effect on inner flow field structure of SFE, but some effects on the control thrust of attitude control motors both in magnitude and in direction.
结果表明，弹体旋转对超音速射流元件内部流场结构几乎没有影响，而对姿态控制发动机的控制推力大小和方向的影响不容忽视。
View the magnetic field lines or use a meter to show the direction and magnitude of the current.
观察此长线或利用仪表来显示电流的方向和量级。
Also, MMF of the field winding is represented as electric currents in the gap between poles, with regard to magnitude and direction of magnetic field at respective poles.
另外，用两极之间的电流表示励磁绕组磁动势，对应于各极之间磁场的大小和方向。
To overcome this fault, concept of main star is introduced, and in the process of star field identification, information of star view magnitude is used.
为了克服这一缺点，引入主星的概念，并在星图识别过程中加入星等信息。
The results show that this microsensor is not only used to measure the magnitude of magnetic intensity, but also applied possibly to monitor the direction of vector of the magnetic field.
结果表明：微传感器件不仅可以测量出磁场的大小，而且给出了测量磁场矢量方向的可能性。
Related in this paper is the method of monitoring the magnitude by way of clip time in the field work for the Datong -Yanggao earthquake.
叙述了在大同—阳高地震现场工作中用限幅时间测定震级的方法。
If a scalar field changes slowly, it resembles a constant, both in its fixed magnitude and in its lack of directionality;
如果纯量场变化缓慢，它就会有固定的大小，而且没有方向性，就像一个常数一样；
There is great difference of critical current in HTS tapes under the magnetic field with different magnitude and oritations at 77K, which shows strongly anisotropy of critical current.
高温超导带材的临界电流在77K不同磁场大小和方向上相差很大，表现出强烈的各向异性。
Characteristics of space time magnitude in precursory field and mechanism of precursor anomaly are analyzed.
分析了前兆场的时空强特征，前兆异常机理。
In the same plane, a kind of in-situ stress has some but not significant change in both magnitude and direction at different points, indicating a uniform in-situ stress field in the mining area.
在同一平面内，同一种地应力在不同点的大小方向有一定的变化，但没有出现突变现象，说明矿区地应力场比较均匀。
This paper provided a new spherical phased array with unequal center to center space between arrays and researched the effect of phased and magnitude quantization errors on the field patterns.
研究了一种不等间距排列的球面相控阵列及其相位和幅度调控量化误差对声场的影响。
Characteristic of space time magnitude in precursor field, mechanism of precursor anomaly, earthquake preparation, and relation between field and epicenter are analyzed.
分析了前兆场的时空强特征、前兆异常机理、孕震过程及场源关系。
The spectra of the far-field body wave displacement for various magnitude earthquakes are derived, using a two-dimensional faulting model featuring a rectangular fault.
使用二维矩形破裂模式，导出了大小不同地震的震源位移谱的表达式。
Moreover the trajectory distribution of inclusions is influenced by the diameter of inclusions and by the magnitude and position of the magnetic field.
非金属夹杂物的直径、磁感应强度的大小及磁场的位置影响非金属夹杂物的运动轨迹及分布。
Furthermore, field investigations indicate that the earthquake with magnitude of 63/4 in 1119 occurred near Kalamu.
此外，野外调查结果表明，1119年前郭6~3/4级地震最有可能发生在卡拉木附近。
The results show that hydraulic fracture propagation is not only related to the orientation of borehole in the stress field, but the magnitude of principal stresses.
通过研究发现，水力裂缝方位不但与井筒在现场地应力场中的方位有关，而且主应力的大小也会影响到裂缝的延伸情况。
Vehicle field tests show that the positioning accuracy can be improved by 2-3 orders of magnitude, being close to the design specification of American PADS.
跑车试验表明，系统定位精度提高了3个数量级，接近美国PADS系统的设计指标。
The density of the lines indicates the magnitude of the field, the lines Being crowded together where the magnetic field is strong.
线的密度表示磁场的强度，磁场强的地方磁力线就密集。
To estimate flux magnitude and direction, a Kalman filter is built by using stator current and PM flux as state variables under magnetic field oriented coordinate.
通过选择磁场同步旋转坐标系下定子电流和永磁体磁链为状态变量，构建估算转子永磁体磁链幅值和方向的卡尔曼滤波器。
To estimate flux magnitude and direction, a Kalman filter is built by using stator current and PM flux as state variables under magnetic field oriented coordinate.
通过选择磁场同步旋转坐标系下定子电流和永磁体磁链为状态变量，构建估算转子永磁体磁链幅值和方向的卡尔曼滤波器。
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