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Have the multipolar child glass lens and the multipolar child glass lens possess the production mannered null part to be held of the observation device
Have the multipolar child glass lens and the multipolar child glass lens possess the production mannered null part to be held of the observation device
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机译:具有多极子玻璃镜片和多极子玻璃镜片具有观察装置所要生产的零配件
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摘要
PROBLEM TO BE SOLVED: To provide a multipolar lens with little magnetic field fluctuation and an observation device provided with the multipolar lenses.;SOLUTION: This multipolar lens 4a has a plurality of pole elements 23 having held parts 22c, a circular holding member 25 holding the held parts 22c of the pole elements 23 and a circular yoke 29 arranged outside the holding member 25 and magnetically combined with base end parts of the pole elements 23. The yoke 29 is provided with an opening formed long in its peripheral direction, and the base end parts of the pole elements 23 are arranged in the opening 29a.;COPYRIGHT: (C)2005,JPO&NCIPI
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