# 经济模型

- [什么是$PS](/patterned-samurai-chinese/psamurai/jing-ji-mo-xing/shen-me-shi-ps.md)
- [什么是$PSS](/patterned-samurai-chinese/psamurai/jing-ji-mo-xing/shen-me-shi-pss.md)
- [生态收入](/patterned-samurai-chinese/psamurai/jing-ji-mo-xing/sheng-tai-shou-ru.md)