它采用四极枪结构,两个栅极,第一栅极采用双层同心球面网,第二栅极外还添加了屏蔽筒。
The first grate has double spherical nets with the same center and outside the second one there is a shield cylinder to make electron congregate.
它采用四极枪结构,两个栅极,第一栅极采用双层同心球面网,第二栅极外还添加了屏蔽筒。
The first grate has double spherical nets with the same center and outside the second one there is a shield cylinder to make electron congregate.
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