The bit thread type is regular pin.
钻头丝扣是正规扣。
Oh, we have quite a regular, cold perm, straight perm, pin curl and foam.
哦，我们有很多种：普通的，冷烫，直发烫，卷发烫和泡沫烫。
This paper tries to generalize the throwing objects from the one dimension pin to the convex curve in two dimension, and even the three dimensional regular tetrahedron and regular hexahedron .
在蒲丰投针问题的基础上，把投掷物由一维的针推广到二维的凸曲线，三维的正四面体、正六面体；
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