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electromagnetic focusing
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electromagnetic focusing
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electromagnetic focusing
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通过调节线包电流改变磁场的大小和磁场分布,可以比较方便地调节电子注的尺寸和形状,使器件具有高互作用效率和高电子注通过率的电子注聚焦方法。
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electromagnetic focusing
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dimensionless conductance
dimensionless constant
dimensionless factor
dimensionless notation
dimensionless number
dimensionless parameter
dimensionless quantity
dimensionless time parameter
dimensionless unit
dimensionless variable
dimension lumber
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dimension of a cell
dimension of a complex
dimension of affine set
dimension of a lattice
dimension of algebraic group
dimension of a linear space
dimension of a linear system
dimension of a manifold
dimension of an element
dimension of an ideal
dimension of an offine variety
dimension of a physical quantity
dimension of a polyhedron
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