Turn the visibility OFF for the "background" and "top" layers.
关闭“背景图层”和“顶部图层”的可视性。
Turn the visibility ON for the white "background" layer.
打开白色“背景图层”的可见性。
Turn ON the visibility of the white "background" layer. Delete the path (right click and select Delete path).
打开白色“背景图层”的可见性。删除路径(右击并且选择“删除路径”)。
On the basis of structure design of optical system and parameter option of optical components, the visibility of interference fringe with zero background intensity is optimized.
通过对光学干涉系统结构设计和元件参数选择，最大限度地优化了干涉条纹的可见度，并设计出零背景光强标准硅球直径精密测量系统。
On the basis of structure design of optical system and parameter option of optical components, the visibility of interference fringe with zero background intensity is optimized.
通过对光学干涉系统结构设计和元件参数选择，最大限度地优化了干涉条纹的可见度，并设计出零背景光强标准硅球直径精密测量系统。
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