The observation of scan electron lens shown that the result, the foam has the ideal structure.

扫描电镜的观察结果表明，研制的泡沫具有比较理想的泡孔结构。

Use magnetic field lens again, two kinds of electron lens elaborate respectively below form and principle.

又用磁场透镜，下面分别阐述两种电子透镜的构成和原理。

By assuming the weak lens focal length expression to be the first term in a power series a simple and accurate formula can be derived for the objective focal length of a magnetic electron lens.

用假设弱透镜焦距表达式是一个幂级数中的第一项的方法，可以导出相当准确且便于实用的电磁电子透镜物镜焦距公式。

Limited to 5000 cameras, BLACK Fujifilm version only available in Japan and equipped with the Fuji EBC (Electron Beam Coated) Fujinon lens.

有限公司5000相机，黑色富士版本只在日本上市，并与富士e BC的(电子束镀膜)配备富士龙镜头。

The focusing properties of a space-charge lens depend on the size, shape and density distribution of its electron cloud.

空间电荷透镜的聚焦特性决定于其电子云的大小、形状和密度分布。