缩短了的锥形物用来测定风向。

Truncated cloth cone used to indicate wind direction.

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锥形物上的任何破损、裂缝或孔洞，都会造成声音失真。

Any tear, crack, or hole in the cone will cause distortion in the sound.

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地面观察者形容说这片明亮的人造云像锥形物或是伞状物一样聚集，并且在几分钟内消逝。

Ground observers described a bright artificial cloud resembling a cone or fan that soon faded out within a few minutes.

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