1) External magnetic strengths
背景磁场强度
2) background lectromagnetism field
背景场强
3) background magnetic field
背景磁场
1.
To the problem of the low precision of common magnetometers caused by the influence of the background magnetic field,a new fluxgate gradiometer which is based on the technique of the three-tip fluxgate and the structure-type of two sensors is developed.
针对普通磁力仪测量磁场的梯度存在受背景磁场的影响大,从而导致测量精度低的问题,采用三端式磁通门技术和双探头的结构型式,试制1种三端式磁通门磁力梯度仪,其对背景磁场和磁强梯度均实现闭环测量。
4) seismo geomagnetic background field
震磁背景场
1.
It is very important that how to calculate the seismo geomagnetic background field,and study the anomaly variation of geomagnetic field,or geomagnetic residual field and secular variation field.
文章简要介绍了计算震磁背景场的数学方法 :多项式方法、球冠谐和分析方法、矩谐分析方法和曲面样条函数方
6) background luminance
背景耀度，背景发光强度
补充资料：左手定则(见磁场强度)
左手定则(见磁场强度)
lefthand rule
z日05怕。℃〕d IngZe左手定则(left一hand rule)度。见磁感应强
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条