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蜘蛛为什么从屁股吐丝

更新时间: 2020-11-10 00:00:00     

1、蜘蛛的丝线是从纺器中拉出,不是屁股。蜘蛛的腹部有吐丝器,喷出的液体在空气中变成丝状物,就是蜘蛛丝。

2、蜘蛛的纺器不止一个,数量成对。所以被人误以为是从屁股拉丝。

3、原始种的纺器是8个,大多数蜘蛛由6个,少数只有4个。

关键词: 蜘蛛 为什么 屁股 吐丝

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