spiral horn 螺旋状角
She was pointing at an enormous, gray spiral horn, not unlike that of a unicorn, which had been mounted on the wall, protruding several feet into the room.
她指着一只巨大的灰色螺旋形兽角，与独角兽的有些相似，它安在墙上，伸进房间几英尺。
The spiral horn of sheave and rotation speed had influence on sowing performance.
说明了槽轮的螺旋角度和转速对排种性能的影响。
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