运用了截面为甜甜圈状的涡流光束形成的光涡流通道；
the use of optical vortex beams with a doughnut-like shape in the cross-section to form an optical vortex pipeline;
值得注意的是，具有轨道角动量的光，偏振方向(用箭头方向表示)在截面内部发生变化。
Note that in light with orbital angular momentum, the direction of polarization (denoted by the direction of the arrow) does not change across the cross section.
简单而巧妙的设计使自由流畅的平面和截面成为可能，在炎热的夏天允许自然光的照射而不会过热。
Simple and yet clever design moves enable a free-flowing plan and section which allow an abundance of natural light without overheating during the hot summer days.
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