Theprocess of the bottle beam generated from an axicon-lens system is described by a novel method based on the ray-tracing.

利用几何光学的光线追迹法形象地描述了轴棱锥透镜系统产生局域空心光束过程。

youdao

With a little thought, one can put together a mini cellar that not only meets all your wine needs, but will expand your knowledge and shine a little ray of light on the magic of understanding how wine evolves in the bottle, improving and mellowing with age.

WSJ: Will Lyons on Wine: How to Start a Wine Cellar