自发光（发射）¶

参考

编号|数量: Sets the amount of hair strands. Use as few particles as possible (especially if you plan to use soft body animation later), but still enough to cover the surface and have good control. A few thousand particles is generally enough for a regular haircut. The hair will be made denser later on using 子级.
毛发长度: 控制毛发的长度。