- 1. 某些绝种的头足类动物具有特殊的旋卷形态。
- Certain extinct cephalopods have an unusual coiling shape.
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- 2. 拳卷的，旋卷的卷成线圈样式，其尖端在中间的，如未展开的蕨叶的。
- Rolled up in the form of a coil with the tip in the center as an unexpanded fern frond .
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- 3. 拳卷的，旋卷的卷成线圈样式，其尖端在中间的，如未展开的蕨叶的。
- Rolled up in the form of a coil with the tip in the center, as an unexpanded fern frond.
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- 4. 旋切与收卷同步可减少板材重叠、扯断，提高板材的使用率。
- The rotary cutting and synchronous rolling can reduce overlapping of plate material and pulling-break and improve the using rate of plate material.
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- 5. 旋切与收卷同步可减少板材重叠、扯断，提高板材的使用率。
- The rotary cutting and synchronous rolling can reduce overlapping of plate material and pulling-break and improve the using rate of plate material.
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