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periodic electrostatic focusing
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periodic electrostatic focusing
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periodic electrostatic focusing
周期静电聚焦
由一组沿电子注的传输路径排列的静电透镜所产生的周期变化的电场来聚焦电子注的聚焦方式。
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sheaf of Abelian groups
sheaf of circles
sheaf of complexes
sheaf of curves
sheaf of differential operators
sheaf of differentials
sheaf of finite type
sheaf of functions
sheaf of germs
sheaf of germs of analytic fanction
sheaf of germs of divisors
sheaf of germs of functions
sheaf of groups
sheaf of hyperfunctions
sheaf of ideals
sheaf of lines
sheaf of meromorphic functions
sheaf of modules
sheaf of parallel lines
sheaf of planes
sheaf of regular functions
sheaf of relations
sheaf of rings
sheaf of semigroups
sheaf of sets
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