location attraction field 区位引力场
attraction field regularization 边缘吸引力场正则化
short-distance attraction field 短程引力场
field of vacuum attraction 真空引力场
The coil is suspended in an external magnetic field and the current running through it adjusted so that the attraction between the two magnets balances the gravitational force on the suspended mass.
ECONOMIST: Weighing a kilogram
Sue herself went to the Field Museum in Chicago, where she has since become a main attraction for visitors.
FORBES: On The Block
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