magnetic field center 磁力中心线
They have been leading a project, based at NASA's Ames Research Center in Moffett Field, California, to retrieve high-resolution images from old magnetic tapes.
他们两人在加利福尼亚州莫菲特基地负责美国宇航局艾姆斯研究中心(ames Research Center)的一个项目，该项目的目的是为了从一些旧磁带中获取高分辨率的图片。
Geophysicists have long known that the source of the fluctuating magnetic field lies deep in the center of the earth.
地球物理学家很早就知道，地球磁场变化的原因深藏于地球中心。
Has analyzed the Helmholtz coil center region axial magnetic field distribution, gave one kind to survey the Helmholtz coil magnetic field distributed one new method.
分析了亥姆霍兹线圈中心区域轴向磁场的分布，给出了一种测量亥姆霍兹线圈磁场分布的一种新方法。
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